Wire Harness Installation Instructions

For Installing:
Part #60102 - GM 86-89 TPI Mass Air Flow (MAF) Standard Harness
Part #60103 - GM 90-92 TPI w/Speed Density (MAP) Standard Harness
Part #60202 - GM 86-89 TPI Mass Air Flow (MAF) Extra Length Harness
Part #60203 - GM 90-92 TPI w/Speed Density (MAP) Extra Length Harness

Manual # 90534
 Painless Performance Products, LLC
2501 Ludelle Street
Fort Worth, TX 76105-1036
800-423-9696 phone – 817-244-4024 fax
Web Site: www.painlessperformance.com
E-Mail: painless@painlessperformance.com

If you have any questions concerning the installation of this product, feel
free to call Painless Performance Products' tech line at 1-800-423-9696.
Calls are answered from 8am to 5pm central time, Monday thru Thursday,
8am-4:30pm Friday, except holidays.

Here we have provided you with accurate instructions for the installation
of this product. However, if you have comments/suggestions concerning these
instructions, please call or email us (our contact information can be found at
the top of this page or online at www.painlessperformance.com).We
sincerely appreciate your business.

Painless Performance Products, LLC shall in no event be liable in

contract or tort (including negligence) for special, indirect, incidental, or
consequential damages, such as but not limited to, loss of property, or any
other damages, costs or expenses which might be claimed as the result of the
use or failure of the goods sold hereby, except only the cost of repair or
replacement.

Should you damage or lose part of your manual, a full color copy of
these instructions can be found online at www.painlessperformance.com

Installation Manual: 90534

13th Edition: September 2013

Copyright  1996 by Painless Performance Products, LLC
 TABLE OF CONTENTS
List of Figures.…………………………………………………………………… ii
List of Tables.……………………………………………………………………. ii
List of Diagrams………………………………………………………………….. ii

1.0 Introduction.............................................................................................................. 1

2.0 About These Instructions......................................................................................... 1

3.0 Tools Needed............................................................................................................ 2

4.0 Pre-Installation and Harness Routing Guidelines.................................................…. 2

4.1 Transmission Lockup Function.................................................................… 2
4.2 Understand the Engine that you are using................................................…. 4

5.0 General Installation Instructions.................................................................................7

5.1 Grounding The Vehicle................................................................................. ..8
5.2 Rough Installation......................................................................................... ..8
5.3 Harness Attachment...................................................................................... ..8
5.4 Terminal Installation Instructions.........................................................…… ..9

6.0 Specific Circuit Connections………………………………………………………...10

6.1. Dash Section Installation……………………………………………………..10
6.2 Sensor & Relay Installation…………………………………………………..14

7.0 Early-Version GM Tuned Port System Wire Harness Installation Instructions....... 16

7.1 Contents of the 60102 Wire Harness Kit...................................................... 16
7.2 Engine Group Installation............................................................................. 16
7.3 Dash Section Installation.............................................................................. 16
7.4 Sensor and Relay Installation........................................................................ 17
7.5 Tail Section Installation................................................................................ 17

8.0 Late-Version GM Tuned Port System Wire Harness Installation Instructions........ 21

8.1 Contents of the 60103 Wire Harness Kit..................................................... 21
8.2 Engine Group Installation............................................................................ 21
8.3 Dash Group Installation............................................................................... 21
8.4 Sensor and Relay Installation....................................................................... 21
8.5 Tail Section Installation......................................................................………22

9.0 Pre Adjustments Before Starting Engine…………………....................................... 23

9.1 Throttle Position Sensor Adjustment………………………………………. 23
9.2 Base Idle Adjustment……………………………………………………… 23

10. Trouble Shooting Instructions………………………………………………………23

10.1 The Check Engine Light…………………………………………………….23
10.2 Retrieving Trouble Codes From The Computer………………...…………24
10.3 When to Call Painless…………………………………………....………...26

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11 Add On Early TPI Emissions Kit……………………………………………………27

12 Add On Late Emissions………………………………….………………..………...30

LIST OF FIGURES

Figure 4.1 Fuel Injection Computer................................................................... 4

Figure 4.2 External Coil Distributor Hookup.................................................... 6
Figure 6.3 Assembly Line Diagnostic Link (ALDL) Connector...................…. 10
Figure 6.4 Neutral Safety Switch …….………………………………………...11
Figure 6.5 Brake Switch ……….……………………………………………….12
Figure 6.8 Oxygen Sensor.................................................................................. 14
Figure 6.9 Knock Sensor.................................................................................... 15
Figure 6.10 TCC Solenoid................................................................................... 15
Figure 7.1 Tuned Port Injection System, Right Side......................................... 19
Figure 7.2 Tuned Port Injection System, Left Side............................................ 19
Figure 7.3 Engine Detail, Right Side................................................................. 20
Figure 7.4 MAF Sensor..................................................................................... 20
Figure 7.5 Engine Compartment Overview....................................................... 21

LIST OF TABLES

Table 4.1 Compatible Parts..................................................................................6

Table 6.2 Sensor and Relay Installation........................................................... 14
Table 7.1 GM Tuned Port Injection Engine Group Connections.................... 18
Table 9.1 Diagnostic Trouble Codes................................................................ 25

LIST OF DIAGRAMS

Diagram 2 Early TPI Emissions……………………………………………….29

Diagram 3 Late TPI Emissions………………………………………………..32
Diagram 4 Brake Switch Relay Connection……………………..……………33

ii
1.0 INTRODUCTION
You have purchased what we at Perfect Performance Products, Inc. believe to be the most
up-to-date and easiest-to-install automotive fuel injection harness on the market. It is
designed for easy installation, even if you have no electrical experience.

This harness is designed to be a complete wiring system for the fuel injection system on
General Motors tuned port (5.0L and 5.7L) injection engines. This includes all wiring
that is needed by the computer to run and control the fuel injection system.

Most of the wiring in the harness has been pre-terminated to the proper connector and all
wire is rated at 125°C and has been GM color-coded.

These fuel system harnesses have been divided into three major groups:
ENGINE GROUP Includes wiring for the fuel injectors, distributor,
sensors and tail section.

DASH GROUP Includes ignition feed wire, assembly line diagnostic

link (ALDL) connector, check-engine light,
gearshift position wiring and brake switch wire.

2.0 ABOUT THESE INSTRUCTIONS

These instructions provide information for the installation of the 60102 and 60202 Tuned
Port Injection Wire Harness Kit (for MAF TPI's), and the 60103 and 60203 Tuned Port
Injection Wire Harness Kit (for MAP TPI's). The contents of these instructions are
divided into major Sections, as follows:

1.0 Introduction
2.0 About These Instructions
3.0 Tools Needed
4.0 Pre-Installation and Harness Routing Guidelines
5.0 General Installation Instructions
6.0 Specific Circuit Instructions
7.0 Early Version TPI (Mass Airflow) Instructions 60102 / 60202
8.0 Late Version TPI (Map Sensor) Instructions 60103 / 60203
9.0 Pre Adjustments Before Starting Engine
10.0 Trouble Shooting Instructions
11.0 Add on Early TPI Emissions
12.0 Add on Late TPI Emissions

Sections are further divided into Paragraphs and Steps. Throughout, the Figure
numbers refer to illustrations and the Table numbers refer to information in table form.
These are located in or near the sections or paragraphs to which they correspond. Always
pay careful attention to any Notes or any text labeled CAUTION.

1
3.0 TOOLS NEEDED
In addition to your regular tools, you will need, at least, the following:
Crimping Tool Note: Use a quality tool to avoid over-crimping.
Wire Stripper
Continuity Tester Caution: Do not use a test light to test the computer or
sensor wiring or you will damage the computer.
Electric Drill
1-1/4" Hole saw (for the rubber grommet in the firewall)

4.0 PRE-INSTALLATION AND HARNESS ROUTING GUIDELINES

The installation of your harness kit consists mainly of two parts:

• The physical routing, positioning, and securing of the harness, wire groups, and
individual wires and connectors.
• The proper electrical connection of the individual circuits.

These two major tasks are not separate steps, but are integrated together. That is, you will
route some wires and make some connections, route some more wires and make some
more connections.
We cannot tell you how to physically route the harness in your automobile. That depends
a great deal upon the particular make of automobile and to what extent you want to
secure and conceal the harness. We do offer some general guidelines and routing
practices starting in Paragraph 4.3, GENERAL installation instructions in Section 5.0,
and precise instructions concerning the electrical connections you will have to make
beginning in Section 6.0. To help you begin thinking through the installation of your
wire harness, read the following sections:

4.1 VEHICLE SPEED SENSOR AND TRANSMISSION LOCKUP

FUNCTIONS
Before you install the harness, please decide the following things:

a. Are you going to use a 700 R4 Lockup Transmission that you want
the computer to control the lockup on?
b. Does the engine have to be emissions legal; i.e. does the EGR
valve and /or air solenoid, and diverter valve need to be connected

If you answered yes to either or both of these questions then you must connect the
wires labeled VSS to a vehicle speed sensor that will provide a two (2) or four (4)
pulse signal to the computer. On the early model tuned port the sensor should
output a square wave and on the late model tuned port engines it should provide a
sine wave output. Painless Wiring offers a VSS for either application, that will
allow you to use your cable drive speedometer (if applicable)

If you answered no to both of these questions then you may choose not to use a
vehicle speed sensor. Please note, there is the possibility of drivability issues,
unless the VSS is installed.

2
If you are going to use a vehicle speed sensor, take the orange/black and
black/white wires in the dash section (labeled for the park/neutral indicator
switch) and connect them to the Park/Neutral Indicator Switch, which is designed
to tell the computer the transmission is in park, as instructed in 6.1.4, and
Figure 6.5. Do not connect the wires together.

Important: The orange/black and black/white wires in the dash section that
are labeled for the park/neutral indicator switch are to be
connected to the park/neutral indicator switch, NOT A
NEUTRAL SAFETY SWITCH. Under no circumstances should
you connect these wires to a neutral safety switch. (A part/neutral
indicator switch is a switch that tells the computer when the
vehicle is in park or neutral, but a neutral safety switch is a switch
that keeps the vehicle from starting unless it is in park or neutral.)
You should never connect the orange/black and black/white wires
to the vehicle speed sensor wiring.

If you are not going to use a vehicle speed sensor then you will take the
orange/black and black/white wires in the dash section (labeled for the
park/neutral indicator switch) and connect them together.

4.1.1 If you do NOT wish to use the lockup function, tape off and store the
single purple wire, marked brake switch, in the dash group and the 4-
position square connector in the tail section.
4.1.2 If you ARE going to use the lockup circuit then you MUST have a vehicle
speed sensor (VSS) and the correct brake switch. These are necessary to
make the lockup function work correctly. The brake switch should be
closed (electrically connected) when the brakes ARE NOT being applied
and open (not electrically connected) when the brakes ARE being applied.
This is the opposite of a standard brake light switch. The vehicle speed
sensor lets the computer know how fast the wheels are turning.
4.1.3 Regardless of whether you use the lockup function, the vehicle speed
sensor (VSS) must be used and is needed by the computer so that it can
command the emissions control devices on the engine. This part is
necessary if you want your vehicle to be street-legal.

4.1.4 There are two different VSS harness applications. Early TPI has a single
brown wire that attaches to one of the two wires coming out of the 60115
speed sensor and the other wire is connected to ground. The Late TPI has
two wires, purple and yellow that goes to and attaches to the 60116 sensor
from the computer.

3
4.2 You should get to know the particular engine that you are using:

• EARLY VERSION TUNED PORT INJECTION (TPI) SYSTEM WITH

A MASS AIRFLOW (MAF) SENSOR: The 60102 and 60202 harness will
support the mass airflow (MAF) sensor, the burn off circuit wiring, and the
electronic spark control (ESC) module in addition to the other wiring
common to the tuned port systems.
• LATE VERSION TUNED PORT INJECTION (TPI) SYSTEM
WITHOUT A MASS AIRFLOW (MAF) SENSOR, DESIGNED TO USE
A MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR, BUT DOES
NOT REQUIRE AN ELECTRONIC SPARK CONTROL (ESC)
MODULE: The 60103 and 60203 harnesses are designed for and will
support this system. This system has three connectors at the computer
instead of the two connectors shown in Figure 4.1.

Note: Computer chips, on the later model (late 89 and up) tuned port engines all factory
chips have the vehicle anti-theft system (VATS) programmed into them so that they
cannot be used unless the factory steering column, compatible with the computer, was
installed. For the late model tuned port only you must obtain an aftermarket chip that
does not have the VATS programming in it.. For the late model tuned port systems, you
will need to obtain a chip for a 1991 Camaro with the VATS system removed so that it
will be compatible with our harness. Also, GM started using the VATS system in late
1989 so if you are using an 1989 chip on an early style tuned port motor then please be
careful to use a chip that does not have the VATS programmed into it.

Figure 4.1 Fuel Injection Computer

4
 4.2.1 The Painless Harness is designed to be used with specific sensors and
relays. See Table 4.1 on page 7. These will meet all requirements and
are compatible with Painless Performance harnesses. The following
numbers given are GM part numbers except for the vehicle speed sensor
(VSS) which is a Painless Performance number. The main computer part
numbers are REQUIRED for use with our harnesses. Note: Distributor to
Coil and the Coil Power/Tach Pigtail are used only if you have a
“separate coil” distributor.

The computer part numbers shown in the compatible parts list in Table
4.1 are required part numbers for that application. The use of any other
computer may damage the computer, harness or both. Use of the wrong
computer will almost certainly cause problems. Please double check to be
sure that you have the correct computer part number (it is shown as a
service number on the computer itself). The rest of the part numbers
shown are for your information only.

4.2.2 If you are using a separate coil type distributor, then you will use the
distributor adapter included in the kit. You will also need to obtain the
distributor to coil and coil power/tach pigtails either from your local
dealer, a wrecking yard or from the original harness. The wiring for the
separate coil system is shown in Figure 4.2.

4.3 Familiarize yourself with the harness by locating each of the harness groups and
by looking at the connectors on the wire ends.
4.4 Decide where and how the computer and sensors will be mounted. Painless
Performance wire harness kits are designed to mount either under the dash or in
the lower kick panel on the right side. They must be no further apart than the
wiring will allow (approx. 10 inches). Part numbers 60202 and 60203 will allow
installation under the front seat.
4.5 A good exercise is to lay out the wire harness on the floor beside your vehicle and
identify all the connectors and wires. The harness must be routed from the inside
of the vehicle out to the engine compartment.
4.6 You will want to route the harness through and around open areas. Inside edges
provide extra protection from hazards and also provide places for tie wraps, clips
and other support.
4.7 Route the harness away from sharp edges, exhaust pipes, and the hood, trunk, and
door hinges.
4.8 Plan where harness supports will be located. Use a support approximately every 6
inches unless the harness routes under the floor carpet.
4.9 Allow enough slack in the harness at places where movement could possibly
occur (body to frame, frame to engine, etc.).
4.10 The wires should be bundled into harness groups. Use tape, nylon ties or poly-
split loom.

5
Figure 4.2 External Coil Distributor Hook-up

MAF Tuned Port Injection 60102 & 60202 MAP Tuned Port Injection 60103 & 60104

Main Computer……………..1227165 or 16198259 Main Computer……..…………1227730 or 16198262

Brake Switch………………………………….25524845 Brake Switch…………………………………….25524845
Neutral Safety Switch……………………..15705308 Neutral Safety Switch………………………..15705308
Electronic Spark Control Module……….16128261 Manifold Absolute Pressure Sensor…....16137039
Manifold Air Temp…………………………..25036979
Knock Sensor………………………………….10456018 Coolant Temperature Sensor………………25036979
Oxygen Sensor…………………………………..AFS 21 Knock Sensor……………………………………10456126
Mass Airflow Sensor………………………..14094712 Oxygen Sensor………………….………………….AFS 21
Mass Airflow Power Relay………………..10067925 Oil Pressure Switch…………..…25036553 or D1818
Mass Airflow Burn Off Relay……………..10094701 Vehicle Speed Sensor.……………………….PPP 60116
Oil Pressure Switch……………25036553 or D1818 EGR Solenoid…………………1997111 or 214-331 **
Vehicle Speed Sensor……………………..PPP 60115 Distributor to Coil Wiring.…………………PPP 60124
Distributor to Coil Wiring……………… PPP 60124 Coil Power/Tach Pigtail….…………………PPP 60125
Coil Power/Tach Pigtail…………….......PPP 60125
EGR Solenoid………………1997111 or 214-331 **
Manifold Air Temp……………………….…25036979
Non-Vats Prom (85-88 5.0L engines)…16082183
Non-Vats Prom (85-88 5.7L engines)…16068654

* Note: This Prom does not control any transmission or torque converter functions.
** This part has been discontinued by GM and is for reference only. The new replacement is a 214-339,
Available thru your local Delco Distributor. Call Painless for the adapter pigtail needed for this unit

Table 4.1 Compatible Parts

6
5.0 GENERAL INSTALLATION INSTRUCTIONS
Caution:
 Do not disconnect the battery or the computer connector(s) while the ignition is
on.
 Do not short any wire in this harness to ground (with the exception of labeled
ground wires) or damage to the computer will result.
 Giving or receiving a jump-start may damage the computer.
 Do not use a test light when testing computer sensors or computer circuits.
Damage to the computer will result!

When routing the wires for the vehicle speed sensor (if used) make certain that they are at
least 12 inches away from any ignition wiring (spark plug wires, etc.).
Notes:
 All of the adapters, listed in the manual, are included in the wiring kit. You
should use or remove them depending on your particular application.
 If you are switching a TPI engine from MAF Sensor to MAP Sensor then you
must use the new Knock Sensor in Table 4.1.
 An oil pressure SWITCH must be used with this harness. DO NOT BYPASS
OIL PRESSURE SWITCH WIRES.
 If you are using an oil pressure switch that has two or three small pins surrounded
by a plastic collar for an electrical connection, an adapter is in the kit.
 There is a normal, small current drain on these fuel injected systems.
 Each connector in this harness is different and will not fit in the wrong place.
NEVER FORCE ANY CONNECTOR.
 When connecting the plugs to the computer USE EXTREME CARE to make sure
none of the pins in the computer are or have become bent.
 IF YOU HAVE A GM SEPARATE COIL IGNITION SYSTEM ON YOUR
ENGINE: use the adapter in the kit.
 FOR YOUR DISTRIBUTOR: The power wire used on the previous distributor
should work fine as long as there is no ignition resistor in the circuit. It must be a
fused power wire (14 ga. minimum) that is HOT (+12V) when the ignition switch
is in the START AND RUN positions. Connect it to the terminal on the
distributor cap labeled BAT or to the pink wire on the separate Coil Ignition
System. This wire provides power to the ignition coil. YOUR AUTOMOBILE
WILL NOT START OR RUN WITHOUT IT.
 The connector for ignition timing adjustment is located near the computer
connection. This is a black plastic connector in the tan/black wire
 The fuel pump you are using MUST be rated at a minimum of 45 pounds PSI
(per square inch) for tuned port systems.
 If you have headers you may have to relocate the knock sensor for proper
clearance. See Figure 6.9.

7
Note: The oil pressure switch wires are designed to be connected to an oil pressure
switch, not the oil pressure sending unit. An oil pressure sending unit is for a gauge or an
indicator light and will only have one terminal on the top. The stock oil pressure switch
is cigar shaped and has three terminals. If you wish to use the stock oil pressure switch
then you will use the oil pressure switch adapter included with this kit. On the oil
pressure switch adapter there are two wires that match the wire colors coming from our
harness and there is also an extra wire.

The extra wire is for the factory oil pressure gauge or indicator light, depending on what
the switch was originally designed for. You may also obtain a smaller oil pressure switch
if you have clearance problems with the original oil pressure switch. This type of switch
has two male connectors that will plug directly into the harness.

5.1 GROUNDING THE VEHICLE

A perfectly and beautifully wired automobile will nevertheless have problems if

everything is not properly grounded. Don't go to the effort of installing a quality
wire harness only to neglect proper grounding.

5.1.1 Connect a ground strap or cable (minimum of a 2-gauge wire) from the
negative battery terminal to the engine block.
5.1.2 Connect a ground strap from the engine to the chassis (frame). DO NOT
RELY UPON THE MOTOR MOUNTS TO MAKE THIS
CONNECTION.
5.1.3 Connect a ground strap from the engine to the body.

5.2 ROUGH INSTALLATION

Caution: Disconnect the power from your vehicle by removing the negative
battery cable from the battery.

Note: Make no wire connections or permanent mounting of any kind at this

time.

5.2.1 Position the computer and sensors in their intended locations.

5.2.2 Drill a 1-1/4" hole for the firewall grommet near the computer for the
engine group and tail section to pass through.
5.2.3 Route the engine group and tail section through the hole. Push the
grommet (already installed on the harness) into the hole until it is seated.
5.2.4 Route the dash group over to the driver's side of the car.
5.2.5 Route the sensor group to the area where the sensors will be mounted.

5.3 HARNESS ATTACHMENT

Note: Harness routing and shaping is, and should be a time-consuming task.
Taking your time will enhance the reliability and appearance of your
installation. Please be patient and take your time.
5.3.1 Permanently mount computer. You should mount the parts (sensors,
relays, etc.) that will be used for your engine at this time. These parts will
vary by application.
8
 5.3.2 Mold harness groups to the contour of the dash, engine, frame, etc.
Remember to route the harness away from sharp edges, exhaust pipes,
hinges, and moving parts.
5.3.3 Attach harness groups to your automobile with clips or ties starting at the
computer and working your way outward.

Note: Do not tighten tie wraps or mounting devices at this time. Make all
harness attachments LOOSELY.

5.3.4 When used every 1-1/2" or so on the visible areas of the harness, plastic
wire ties make a very attractive assembly. Otherwise, a tie installed in
other areas every 6" or so will hold the wires in place securely.
REMEMBER TO TAKE YOUR TIME.

5.4 TERMINAL INSTALLATION INSTRUCTIONS

Note: In the following steps you will be making the circuit connections.
Before you start, you should carefully read Sections 6.0 through 8.0, as
applicable, and continually refer to the wire connection charts,
DOUBLE CHECKING your length calculations before cutting any wire
or making any connections. These directions are for the wires which do
not have a connector already installed on them.

5.4.1 Have all needed tools and connectors handy.

5.4.2 Select the correct terminal for the wire and application.
5.4.3 Determine the correct wire length and cut the wire. Remember to allow
enough slack in the harness and wires at places where movement could
possibly occur. DOUBLE-CHECK YOUR CALCULATIONS.
5.4.4 Strip insulation away from wire. Strip only enough length necessary for
the type of terminal you are using.

Note: In the following step, make sure that the terminal is crimped with the
proper die in the crimping tool. An improper crimp will not make a
good connection. DO NOT OVER CRIMP.

5.4.5 Crimp the terminal onto the wire.

5.4.6 Connecting the wires and connectors throughout the harness is a repeating
process. Make sure that each wire is first properly routed and then attach.
DO NOT ATTACH THEN ROUTE AFTERWARD.
5.4.7 When all wires are attached, tighten the mounts and ties to secure harness
permanently.
5.4.8 Attach the connectors to the computer BEING CAREFUL NOT TO
BEND ANY PINS.
5.4.9 Only after all connections have been made throughout the harness,
connect the battery to the vehicle.

Caution: Be sure the ignition is off when you reconnect the battery or you
will damage the computer.

9
6.0 SPECIFIC CIRCUIT CONNECTIONS

Note: If you have not already done so, read Sections 4.0 and 5.0 of these instructions
and think through the installation of the harness before securing or cutting any
wires.

6.1 DASH SECTION INSTALLATION

The wires in this group consist of the assembly line diagnostic link (ALDL)
connector (See Figure 6.3), the check engine light (pre-mounted into a mounting
bracket), and four other wires.

Note: You may need to connect the check engine light wires to their mates
in the wire harness.

Caution: Do not make any connections while the computer is plugged into the
harness.

Note: Wire color (example: Blk/Wht) is one wire with a stripe. The second
color (the stripe) may not be bold. Observe all two-color wires
closely.

6.1.1 Find a suitable location to mount the ALDL connector (using the
bracket that the check engine light is mounted in) that will allow
access to the front of the connector and still allow you to see the
check engine light while driving.
6.1.2 Mount the ALDL connector.
6.1.3. Locate the Pnk/Blk wire and attach it to a 12V fused power
source. POWER IS REQUIRED WHEN THE KEY IS IN
THE RUN AND START POSITION. This is the power wire
for the computer.

Figure 6.3 Assembly Line Diagnostic Link (ALDL) Connector

10
 Figure 6.4 A &B Neutral Safety Switch

6.1.4 Locate the Orn/Blk and Blk/Wht wires in the dash group. These
two wires are for the Park/Neutral Selector Switch, NOT the
Neutral Safety Switch. If you have a GM column then you can
use the combination switch P/N 15679680 and wire it as shown
in FIGURE 6.4.

Caution: Do not connect these wires using directions from different

instructions. You may damage the computer.

6.1.5 If you are NOT using a Vehicle Speed Sensor (VSS) or a

Park/Neutral Indicator Switch then you will connect these two
wires together (orn/blk and blk/wht). When this is done, the
computer will think the vehicle is in park. Engine RPM may be
limited by the computer!

Note: If you do this, the computer will stop controlling the exhaust gas
recirculation (EGR) solenoid. THIS WILL PREVENT THE SYSTEM
FROM BEING STREET LEGAL

11
 6.1.6. The recommended switch is a combination reverse light AND
neutral safety switch. You may use it for these purposes AND for
the needed computer signal. If you wire it EXACTLY as shown in
Figure 6.4B. You will need to tape off and store the Blk/Wht wire
in this case.

6.1.7. If you are going to use the recommended switch for the computer's
benefit ONLY, then you will wire it as shown in Figure 6.4A.

6.1.8 You may install your own switch. This switch must connect the
Orn/Blk wire to ground ONLY when the car is in PARK. You may
or may not want to use the Blk/Wht wire. The other end of the
Blk/Wht wire is already connected to ground through the harness.

Note: Not attaching the orn/blk wire to anything may turn on the check engine
light

6.1.9 The single purple wire is the wire that powers the lockup function
on the transmission. If you ARE NOT using the lockup then you
will tape off and store this wire. If you ARE using the
transmission lockup function then you will have to install a vehicle
speed sensor and a brake switch as described in Paragraph 4.1.2.

6.1.10. If you are using the recommended brake switch then you will wire
it according to Figure 6.5. The wire jumped to the back of the
switch in the illustration is the wire that has power on it whether or
not the brake is being applied. If you have installed your own
switch then it must connect the single purple wire to power ONLY
when the brakes are NOT being applied. If you are using a
hydraulic brake switch see page 33 for proper wiring using a relay.

Caution: Failure to wire this switch correctly will result in a dangerous

situation on the vehicle.

Figure 6.5 Brake switch

12
 6.2 SENSOR AND RELAY INSTALLATION

A. Take the wiring that was previously routed to the sensors and
connect it according to Table 6.2

Color # of Positions Labeled Connect to:

In Connector

Blk/Wht(1), Orn, Dk.Grn/Wht, 5 ----- Fuel Pump Relay (Style 1) (This connector
Red, Gry or Tan/Wht has the short red lead on it)

Blk/Wht,Orn,Dk.Grn/Wht, 4 ------ Fuel Pump Relay (Style 2)

Gry or Tan/Wht

Lt.Grn, Gry, Pur or Blk 3 MAP2,3 Manifold Absolute Pressure Sensor

Red, Dk.Blu, Blk/Wht, 5 MAF (P)2 Mass Airflow Power Relay

Orn, Tan/Wht

Dk.Blu, Blk, 2x Orn 4 MAF (B)2 Mass Airflow Burn off Relay

Blk, Brn, Pnk/Blk, Blu 5 ESC2,3 Electronic Spark Control Module

Notes:

1. On striped wires (example: Blk/Wht), the second color (stripe) may not be bold. Observe two-
color wires closely.
2. Certain applications only.
3. Additional wire length has been added for optional engine compartment mounting.

Table 6.2 Sensor and Relay Installation

Figure 6.8 Oxygen Sensor

14
Figure 6.9 Knock Sensor

Figure 6.10 TCC Solenoid

15
7.0 EARLY VERSION GM TUNED PORT INJECTION SYSTEM WIRE HARNESS
INSTALLATION INSTRUCTIONS

7.1 CONTENTS OF THE 60102 AND 60202 WIRE HARNESS KIT

Take inventory to see that you have everything you are supposed to have in this kit. If
anything is missing, go to the dealer where you obtained the kit or contact Painless
Performance at (800) 423-9696. The kit should contain the following items:
 Main wire harness
 Distributor and Oil Pressure
 Fuel injection harness instructions P/N 90503 (this booklet)

The following optional parts are not included in the kit but are available from Painless
Performance.
 Emission Control Device Harnesses. (Part #60312 or 60313)

7.2 ENGINE GROUP INSTALLATION

The engine group is designed to be separated into left side (driver) and right side
(passenger) sections. Each side is tie wrapped separately, BUT NOT LABELED.
The right side of the engine has the connectors for the idle air control, throttle
position sensor, cold start switch, and coolant temp sensor, all of which ARE
labeled. When you begin routing, FIRST separate the engine group into left and
right sections and place them accordingly.

7.2.1 Before you connect any wires, separate the tail section from the engine
group and place it out of the way.
7.2.2 Locate the two Blk/Wht wires in the harness that end in a single, large ring
terminal and ground them to the engine.
7.2.3 Using Figure 7.5, Table 6.1 and the specific illustrations indicated in
Table 6.1, connect the wiring as directed.
7.2.4 Green wire tagged A/C POWER attaches to the A/C compressor power
wire at the compressor if the vehicle is so equipped. This will increase the
engine idle RPM when the A/C is turned on.

7.3 DASH SECTION INSTALLATION

The dash section installation is addressed in the General Installation

Instructions, section 5.0, Paragraph 6.2.1 and follow the instructions there.

16
7.4 SENSOR AND RELAY INSTALLATION

The following listing is for wires to be cut to length. Connect your wiring accordingly.
Route and terminate the following wires in the under dash area;

7.4.1 Purple wire tagged VATS attaches to the VATS control module if so
equipped.
7.4.2 Purple wire tagged BRAKE SWITCH attaches to the brake switch shown
in FIGURE 6.4
7.4.3 Green/White wire tagged FAN RELAY GROUND is the ground for the
fan relay if the computer is to be the control for the electric fan.
7.4.4 Pink/Black wire attaches to the ignition source described in 6.1.3

7.4.5 Orange/Black and Black/ White wires attach according to your application
as discussed in Section 4.1

NOTE: Any wire that you are not using should be capped & stowed.

7.5 TAIL SECTION INSTALLATION

The tail section wires are connected as described below.

7.5.1 Green – Tan/Blk – Purple wires in the white connector plug into the
transmission, if so equipped.
7.5.2 Tan/White wire tagged FUEL PUMP attaches to the fuel pump. This is the
power wire for the pump.
7.5.3 Brown wire tagged VEHICLE SPEED SENSOR attaches to the vehicle
speed sensor as described in SECTION 4.1.4

17
Wire Colors # of Positions Labeled Connect to:
In Connector

Tan/Blk,Blk/Red,Wht,Pur/Wht 4 IGN Distributor (Figure 7.1)

Pur 1 OXY Oxygen Sensor (Figure 6.8)

Blu, Pnk/Blk 4 conn./2 pos.each INJ Drivers Side Fuel Injectors (Figure 7.2)1

Grn, Pnk/Blk 4 conn./2 pos.each INJ Passenger's Side Fuel Injectors (Figure 7.1)1

Orn, Tan ------ OIL Oil Pressure Switch (Figure 7.2)

Dk.Blu (late) or Wht (early) 1 KNC Knock Sensor (Figure 6.9)2

Tan, Blk 2 MAT Manifold Air Temp Sensor (Figure 7.1)

Blk, Dk.Blu, Gry 3 TPS Throttle Position Sensor (Figure 7.3)

Lt.Blu/Wht, Lt.Blu/Blk 4 IAC Idle Air Control Motor (Figure 7.3)

Lt.Grn/Wht, Lt.Grn/Blk

Ylw, Blk 2 CTS Coolant Temp Sensor (Figure 7.3)

Pur, Tan (if applicable) 2 CSW Cold Start Switch (Figure 7.3)1,3

Pnk/Blk, Gry 2 EGR Exh.Gas Recirculation Valve Solenoid

(Figure 7.1)

Gry,Grn,Blk 3 MAP M anifold Absolute Pressure Sensor

Red ----- ------ Starter Solenoid (Lrg. Term.)

Pur ----- ------ Starter Solenoid (Sm.Term.)3

Pur, Tan (If applicable) 2 CIJ Cold Start Injector (Figure 7.2)1,3,4

Dk.Grn, Red, Dk.Blu, 5 MAF Mass Airflow Sensor (Figure 7.4)

Blk/Wht, Blk

Dk.Grn ------ ------- A/C Power (To Compressor)5

Gry ------ VATS To Steering Column VATS Module (late TPI)

Pur ------ VATS To Steering Column VATS Module (early TPI)

Notes:
1. On tuned port injection engines, the injectors, cold start switch, and cold start injector all use a connector that simply
pushes on. Do not remove the silver attaching clip or the connector may come loose.
2. If you have headers, you may have to relocate the knock sensor for proper clearance.
3. These wires are on EARLY version tuned port systems ONLY.
4. Do NOT confuse this with the cold start switch.
5. The "A/C POWER" wire on both early and late version tuned port systems should be spliced into the A/C compressor
power wire near the compressor. If you do not have A/C then tape and store this wire. This wire senses power to the
compressor and automatically increases the idle speed of the engine when the A/C is turned on.

Table 7.1 GM Tuned Port Injection Engine Group Connections

18
Figure 7.1 Tuned Port Injection System, Right Side

Figure 7.2 Tuned Port Injection System, Left Side

19
Figure 7.3 Engine Detail, Right Side

Figure 7.4 MAF Sensor

20
Figure 7.5 Engine Compartment Overview

8.0 LATE VERSION GM TUNED PORT INJECTION SYSTEMS

INSTALLATION INSTRUCTIONS

8.1 CONTENTS OF THE 60103 AND 60203 WIRE HARNESS KIT

Take inventory to see that you have everything you are supposed to have in this
kit. If anything is missing; go to the dealer where you obtained the kit or contact
Painless Performance at (800) 423-9696. The kit should contain the following
items:
 Main wire harness with connectors on the ends of many of the wires.
 Distributor and Oil Pressure Adapters.
 Fuel injection harness instructions P/N 90503 (this booklet).

The following optional parts are not included in the kit but are available from
Painless Performance.
 Emission Control Device Harnesses. (Part #60314 and 60315)

21
 Notes: All factory computer proms (chips), for the late TPI Systems and some
early TPI computers have the vehicle anti-theft system programmed into them.
An after-market chip must be used with the VATS removed or the original
steering column and VATS module must be used or the engine will not start.

8.2 ENGINE GROUP INSTALLATION

The engine group is connected as described in Section 7.2 of these instructions

except that the engine will not have a mass airflow (MAF) sensor. This system
utilized a Manifold Absolute Pressure (MAP) sensor. When mounting this sensor,
it is important to remember that A) the vacuum port on the sensor must point
straight down, and B) if not in the stock location, you will have to use factory
style hard plastic line to make the connection. Do not forget to ground the two
Blk/Wht wires to the engine.

8.3 DASH GROUP INSTALLATION

The dash section is connected as described in Paragraph 6.2.1 of these

instructions.

8.4 SENSOR AND RELAY INSTALLATION

The sensor and relays are connected according to SECTION 7.4 of these
instructions, using Table 6.1

8.5 TAIL SECTION INSTALLATION

The tail section wires consist of:

A. Purple and Yellow wires tagged VEHICLE SPEED SENSOR, after cutting to
proper length, attach to the two wires coming out of the Part Number 60116
speed sensor. It makes no difference how the wires are attached. The
connector may have to be cut off the 60116 speed sensor to connect to it.
B. Gray wire tagged FUEL PUMP is the power wire for the pump. Route and cut
to length.
C. Lt.blu, tan/blk and purple wires, in the white connector, plugs into 700R4 if so
equipped.

22
 9.0 PRE-ADJUSTMENTS BEFORE STARTING ENGINE

9.1 Throttle Position Sensor Adjustment

A. Turn on ignition but do not start engine.

B. Check to insure throttle is not depressed
C. At the throttle position sensor, place a digital voltmeter's probes into
the blue and black wires in the back of the sensors connector, which
is plugged into the sensor.
D. Loosen the sensor mounting screws and adjust the sensor until the
meter reads .5 volts (1/2 of one volt).
E. Tighten the mounting screws and recheck the meter reading.
F. Some after market chips require a different setting, check their
instructions carefully

9.2 Base Engine Idle Adjustment

A. Turn on ignition but do not start engine.

B. Jumper A & B of the ALDL as if you were checking codes.
C. Wait 30 seconds and then remove the plug from the IAC motor.
D. Remove jumper from ALDL.
E. Start engine and adjust idle speed with adjusting screw at throttle lever
(there may be a cap covering the adjusting screw that will need to be
removed and discarded).
F. Shut off engine and disconnect battery for one minute.
G. Plug the IAC connector back in and then reconnect the battery.
H. Start engine and check for proper idle speed.

10.0 TROUBLE SHOOTING INSTRUCTIONS

If you are having trouble with your engine running badly or not running at all, first
perform basic trouble shooting (checking for faulty connections, spark, timing, fuel
pressure, etc.) then see is the computer has stored a trouble code in its memory.

10.1 THE "CHECK ENGINE" LIGHT

Normally, the "check engine" light should come on when the ignition is initially
turned on, then go out a few moments after the engine starts running. If it
reappears, or stays on while the engine is running, the computer has detected a
problem and a trouble code has been set.

23
 10.1.1 The computer identifies particular trouble codes by flashing the "check
engine" light in a certain way. The codes are read by counting the flashes:

A. The first digit (the "tens" digit) of the code is flashed quickly,
followed by a brief pause, then the second digit (or "ones" digit) is
flashed, followed by a longer pause. For example, three (3) quick
flashes followed by a brief pause followed by two (2) flashes
indicates code 32.
B. The code will repeat itself three (3) times. The next code, if any,
will be displayed in the same manner.

Note: When you access the codes from the computer a code 12 (one
flash followed by two flashes) will first be displayed. THIS
DOES NOT INDICATE A PROBLEM. Code 12 will be flashed
3 times, followed by the particular trouble codes, if any. If the
computer merely flashes code 12 there are no trouble codes
stored. Code 12 means the engine is not running.

10.2 RETRIEVING TROUBLE CODES FROM THE COMPUTER

10.2.1 In order to retrieve the trouble codes stored in the computer, locate the
Assembly Line Diagnostic Link (ALDL) connector (installed and
connected in Paragraph 6.1.1). Turn the ignition on, BUT DO NOT
START THE CAR. Connect a jumper wire from ALDL terminal "A" to
terminal "B" (see Figure 6.3) and observe the "check engine" light.

10.2.2 After you have read any codes (remember the normal code 12), write them
down for reference. Remove the jumper wire from the ALDL connector.

10.2.3 Take the codes one at a time and match them to the codes in Table 9.1.
This will tell you in which circuit the computer has detected a problem.

Note: A code indicates a problem in a specific circuit, NOT THAT A

PARTICULAR PART IS BAD.

10.2.4 Before taking more extensive corrective actions for any trouble code,
make sure that all connections on the indicated circuit, INCLUDING THE
COMPUTER, are clean and tight. Inspect the wiring in the circuit for any
broken, shorted, or exposed wires. Finally, insure all ground wires are
clean and secure.

10.2.5 If you are getting a code from your computer and need to clear the code,
other than code 12, after you have replaced a part, readjusted a part, etc.
You can do this by making sure the ignition is off and then disconnecting
the negative battery cable for a minimum of two minutes. After the two
minutes are up then you simply reconnect the negative battery cable and
recheck the system for codes.

24
 CODE # CIRCUIT AFFECTED CODE # CIRCUIT AFFECTED

13 Oxygen Sensor 361 Mass Airflow Burn Off Circuit

14 Coolant Temp (high) 412 Faulty or Incorrect Mem-Cal Chip

15 Coolant Temp (low) 422 Electronic Spark Timing Circuit

21 Throttle Position Sensor 43 Electronic Spark Control Circuit

23 Manifold Air Temp (low) 44 Oxygen Sensor (lean reading)5

24 Vehicle Speed Sensor3 45 Oxygen Sensor (rich reading)6

25 Manifold Air Temp (high) 462 Vehicle Anti-Theft System

32 Exh.Gas Recirculation Valve 51,52,552 Faulty Mem-Cal, PROM, or Cal-

Pak Chip
1
33 Mass Airflow or Manifold
Absolute Pres. Sensor (high) 53 Charging System over-voltage

1
34 Mass Airflow or Manifold 54 Insufficient Fuel Pump Voltage7
Absolute Pres. Sensor (low)

35 Idle Air Control Circuit

Notes:
1. Your engine will use either a mass airflow sensor and burn off circuit OR a manifold
absolute pressure sensor.
2. A PROM, Mem-Cal or Cal-Pak chip that has not been fully seated or that has a bent
contact may cause one or all of these codes to set.
3. If the Park/Neutral Indicator switch isn't wired correctly this code can set.
4. Early version TPI and TBI systems only.
5. Can be caused by a clogged fuel filter or a vacuum leak.
6. Can be caused by a clogged air filter.
7. Can be caused by a bad fuel pump relay.

Table 9.1 Diagnostic Trouble Codes

25
10.3 WHEN TO CALL PERFECT PERFORMANCE PRODUCTS' TECH LINE

10.3.1 These harness kits have been built with the highest regard to strict quality
control. Before calling us please double-check all connections and
perform normal basic trouble shooting (fuel pressure, timing, ignition
system, etc.).

10.3.2 If you have any questions concerning the installation of this harness or are
having trouble in general; feel free to call the Painless Performance tech
line at (800) 423-9696. Calls are answered from 8 AM to 5 PM CST,
Monday through Friday, except holidays. Please leave a message if you
are unable to reach us and we will return your call as soon as possible.

E-mail: painless@painlessperformance.com
Web: www.painlessperformance.com

11.0 ADD ON EARLY TPI EMISSIONS KIT

(For Part #60102 use Painless #60312 and for Part #60202 use Painless #60313)

The emissions wires in this kit include: the wiring for the charcoal canister, the air
port solenoid the air pump diverter valve, and the EGR diagnostic temperature
sensor. (See Diagram 2, page 29).

STEP 1 - INSTALLATION OF CONNECTORS IN THE ENGINE

COMPARTMENT
Install the following connectors into these locations:

The red connector with the Dk.Grn/Ylw and Blk/Pnk wires, plugs into the
charcoal canister mounted in the engine compartment.

The black connector with the Blk/Red and Blk/Pnk wires, plugs into the air port
solenoid located on the back of the air pump.

The gray connector with the Brn and Blk/Pnk wires, plugs into the air pump
diverter valve located behind the air pump.

The black connector with the single Dk.Grn wire plugs into the EGR valve
diagnostic temperature connector located under the center of the intake plenum.

STEP 2 - ROUTING THE WIRES

Route all of the wires from the front three connectors up to the coolant
temperature sending unit located at the front of the engine next to the thermostat
housing. Using tie wraps secure the wiring to the coolant temp sensor (black and
yellow) wires all the way back to the computer located inside the vehicle. Be sure
to leave enough slack for any possible engine movement.

Caution: Be careful routing the wires through the firewall to avoid damaging
the terminals on the ends of the wires.
26
STEP 3 - ATTACHING THE B+ POWER WIRES
You will find that the three Blk/Pnk wires, end near the back of the engine block.
These wires should be spliced into the Pnk/Blk wire coming from the EGR
solenoid connector. These wires can also be extended and connected to a 12 volt
ignition only (switched) power source if you wish to do so.

STEP 4 - UNPLUGGING THE COMPUTER

Caution: Removing the computer connectors from the computer while the
ignition is on will damage the computer!

First making sure that the ignition is off, unplug the two computer connectors by
pushing down on the blue retaining tab and then pulling straight out and away
from the computer. Be careful not to damage the computer pins! Remove the blue
secondary locks from the black computer connectors by releasing the retaining
clips and pulling them out from the back (wire) side of the connectors.

STEP 5 - CONNECTING THE CHARCOAL CANISTER WIRE AT THE

COMPUTER
Locate the 24-pin (the smaller of the two) computer connector. Using the
attached wiring diagram for reference, look on the wire side of the connector
housing for the corner marked "A-1". Once you have located this, count down the
openings on the same side until you reach "A-3". You will insert the terminal on
the Dk.Grn/Ylw wire (charcoal canister) into this opening, pushing in until the
locking tang engages.

Note: The terminal will only fit one way into the connector; do not try to force
the terminal.
STEP 6 - CONNECTING THE AIR PORT SOLENOID WIRE AT THE
COMPUTER

On the same connector, locate "A-2". This is the opening that you plug the
terminal on the Brn wire (port solenoid) into, using the same procedure as in step
5.
Note: this wire has a second Brn wire spliced into it that should be set aside
until Step 10.

STEP 7 - CONNECTING THE AIR DIVERTER WIRE AT THE COMPUTER

Locate the 36-pin (the larger of the two) computer connector. In the same manner
as you did in Step 5 and 6, locate the "C-1" side. When you have done this, then
count down the same side one opening to "C-2". This is the opening you will
insert the terminal on the Blk/Red wire into. (air pump diverter valve)

STEP 8 - CONNECTING THE EGR TEMPERATURE WIRE AT THE

COMPUTER
On the same side of the same connector as you were using in Step 7, find "C-15".
This is the opening for the terminal on the Dk.Grn wire (EGR diagnostic temp).

27
STEP 9 - REPLACING THE COMPUTER CONNECTORS AT THE
COMPUTER
Replace the secondary locks on both connectors. Be careful to line up the
"fingers" on the locks with the connector openings. Once you have the secondary
locks in place then you can reinstall the computer connectors into the computer.

Caution: use care when reinstalling the connectors, to avoid damaging the
computer pins.
STEP 10 - ATTACHING THE AIR PUMP DIAGNOSTIC WIRE AT THE
ALDL
The brown wire set aside in step 6 goes to the ALDL connector (diagnostic plug).
Route this brown wire along the existing ALDL wiring until you come to the
connector itself. The wire is inserted into the opening labeled "C" on the
connector. (See Diagram 2, page 29)
Notes: Double check all routing making sure that there is enough slack to
allow for any engine or other movement. Reinstall any grommets or other parts
taken off.
Start and drive the vehicle for at least thirty minutes, then check for any trouble
codes stored in the computer.

28
Diagram 2 Early TPI Emissions

29
12.0 ADD ON LATE TPI EMISSIONS KIT
(For Part #60103 use Painless #60314 and for Part #60203 use Painless #60315)

The emissions wires in this kit include: the wiring for the charcoal canister, the air
port solenoid and the air pump diverter valve. (See Diagram 3, page 32).

STEP 1 - INSTALLATION OF CONNECTORS IN THE ENGINE

COMPARTMENT
Install the following connectors into these locations:

The red connector with the Dk.Grn/Ylw and Blk/Pnk wires, plugs into the charcoal
canister mounted in the engine compartment.

The black connector with the Blk/Red and Blk/Pnk wires, plugs into the air port
solenoid located on the back of the air pump.

The gray connector with the Brn and Blk/Pnk wires, plugs into the air pump diverter
valve located behind the air pump.

STEP 2 - ROUTING THE WIRES

Route all of the wires from the front three connectors up to the coolant temperature
sending unit located at the front of the engine next to the thermostat housing. Using
tie wraps secure the wiring to the coolant temp sensor (black and yellow) wires all the
way back to the computer located inside the vehicle. Be sure to leave enough slack
for any possible engine movement.

Caution: Be careful routing the wires through the firewall to avoid damaging the
terminals on the ends of the wires.

STEP 3 - ATTACHING THE B+ POWER WIRES

You will find that the three Blk/Pnk wires, end near the back of the engine block.
These wires should be spliced into the Pnk/Blk wire coming from the EGR solenoid
connector. These wires can also be extended and connected to a 12 volt ignition only
(switched) power source if you wish to do so.

STEP 4 - UNPLUGGING THE COMPUTER

Caution: Removing the computer connectors from the computer while the ignition
is on will damage the computer!

First making sure that the ignition is off, unplug the three computer connectors by
pushing down on the blue retaining tab and then pulling straight out and away from
the computer. Be careful not to damage the computer pins! Remove the blue
secondary locks from the yellow computer connector by releasing the retaining clips
and pulling them out from the back (wire) side of the connector.

30
STEP 5 - CONNECTING THE CHARCOAL CANISTER WIRE AT THE
COMPUTER
Using the attached wiring diagram for reference, look on the wire side of the
connector housing for the corner marked "F-1". Once you have located this, count
down the openings on the same side until you reach "F-7". You will insert the
terminal on the Dk.Grn/Ylw wire (charcoal canister) into this opening, pushing in
until the locking tang engages.

Note: The terminal will only fit one way into the connector; do not try to force the
terminal.

STEP 6 - CONNECTING THE AIR DIVERTER WIRE AT THE COMPUTER

On the same connector, in the same manner as you did in Step 5, locate the "F-4" side.
This is the opening you will insert the terminal on the Blk/Red wire into. (air pump
diverter valve)

STEP 7 - CONNECTING THE AIR PORT SOLENOID WIRE AT THE

COMPUTER
On the same connector, locate "F-2". This is the opening that you plug the terminal
on the Brn wire (port solenoid) into, using the same procedure as in step 5 and 6.

STEP 8 - REPLACING THE COMPUTER CONNECTORS AT THE COMPUTER

Replace the secondary locks on the connector. Be careful to line up the "fingers" on
the locks with the connector openings. Once you have the secondary locks in place
then you can reinstall the computer connectors into the computer.

See Drawing at the back of this manual.

Caution: use care when reinstalling the connectors, to avoid damaging the
computer pins.

Notes: Double-check all routing making sure that there is enough slack to allow
for any engine or other movement. Reinstall any grommets or other parts taken
off.

Start and drive the vehicle for at least thirty minutes, then check for any trouble
codes stored in the computer.

31
Diagram 3 Late TPI Emissions

32
Diagram 4 Brake Switch Relay Connection
33
 Painless Performance Limited Warranty
and Return Policy

Chassis harnesses, fuel injection harnesses and Striker ColdShot units covered under a lifetime
warranty.

All other products manufactured and/or sold by Painless Performance are warranted to the original
purchaser to be free from defects in material and workmanship under normal use. Painless
Performance will repair or replace defective products without charge during the first 12 months from
the purchase date. No products will be considered for warranty without a copy of the purchase
receipt showing the sellers name, address and date of purchase. You must return the product to the
dealer you purchased it from to initiate warranty procedures.

34