Wire Harness Installation

Instructions
For Installing:

#20122 Direct Fit Mustang Chassis

Harness 1969-1970 22 Circuit

Manual #90557
 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: 90557

4TH Edition: JAN, 2024

Copyright © 2007 by Painless Performance Products, LLC

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NOTE :

If your vehicle has an existing harness, you will want to retain it for the possible
re-use of various Pigtails & Connector housings, particular to your application.
Included in this kit is a sheet of pre-printed labels to assist in identifying
connections as the existing harness is removed from the vehicle
If you do not have an existing harness, there is a package of terminals included
with the harness that will enable you to make most of the connections needed.
Replacement lighting pigtails & sockets can be readily obtained from your local
parts distributor

TABLE OF CONTENTS
1.0 Introduction
2.0 About These Instructions…………………………………………………………………..……………………………..4
3.0 Contents in The Painless Wire Harness Kit………………………………………………………………………….5
4.0 Tools Needed…………………………………………………………………………………………………………………..5
5.0 Pre-Installation and Harness Routing Guidelines………….………………………………………………………7
6.0 Harness Installation Instructions………………………………………………………………………………………..7
6.1 General Installation
6.2 Harness Attachment
6.3 Grounding The Automobile
6.4 Terminal Installation and Making Connections
6.5 Testing The System
7.0 Specific Circuit Connections……………………………………………………………………………………………….16
7.1 Alternator/Regulator/Solenoid
7.2 High Amperage Alternator Kit
7.3 Engine Section
7.4 Headlight Section
7.5 Rear Light Section
7.6 Interior Lighting
7.7 Dimmer Switch
7.8 Headlight Switch
7.9 Turn Signal Switch and Brake Light Switch
7.10 Gauge Cluster Section
7.11 Ignition Switch
7.12 Wiper Switch/ Wiper Motor
7.13 Interior Ground
7.14 Console
7.15 Heater-A/C Components
7.16 Radio
7.17 Glove Compartment
7.18 Accessory Relay
8.0 Wire Connection Index and Fuse Requirements……………………………………………………………………33

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 LIST OF TABLES
Table 8.1 Fuse Requirements………………………………………………………………………………………………..36
Table 8.2 Wire Connection Index (1 of 6)…………………………………………………………………..………….36
Table 8.2 Wire Connection Index (2 of 6)……………………………………………………………………..……… 37
Table 8.2 Wire Connection Index (3 of 6)……………………………………………………………………………...38
Table 8.2 Wire Connection Index (4 of 6)……………………………………………………………………………...39
Table 8.2 Wire Connection Index (5 of 6)……………………………………………………………………………...40
Table 8.2 Wire Connection Index (6 of 6)…………………………………………………………..………………….41
Table 8.2 Wire Connection Index (6 of 6)…………………………………………………………..………………….42

Painless Performance Products recommends you, the consumer, read this

installation manual from front to back before installing this harness. Due to the
variables in modifications done to these classic 1969 and 1970 Mustangs, reading
this manual will give you considerable insight on the proper installation of this
harness in an original or modified application.

1.0 INTRODUCTION

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

All Kits have a built-in-anti-theft feature. Removing the fuse labeled “coil” from the fuse block will prevent
the vehicle from starting.

The proper fuses have been pre-installed in the fuse block. In addition, all wires are color-coded and
marked for easy identification. This will help you identify the different circuits during installation and later
on if additions to the overall system are necessary. For fuse specifications and wire color designations,
see Section 8.1 and Table 8.1.

This Painless wire harness is designed to be used in 1969 - 1970 Ford Mustangs. All wire is 600 volt,
257F, TXL. Standard automotive wire is GPT, 300 volt, 176F, with PVC insulation.

This complete Classic Mustang wiring system has been designed with four major sections incorporated
into it:

ENGINE SECTION: Water temperature, oil pressure, aftermarket tachometer, coil, choke, a/c
compressor clutch, coil, wiper motor, ignition bypass (for ballast resistor), reverse switch and neutral
safety switch

HEADLIGHT SECTION: Includes high beam, low beam, park lights, marker lights right turn, left turn,
horns, voltage regulator, starter solenoid, washer pump, brake warning, battery feed and alternator.

UNDER-DASH and INTERIOR SECTION: Includes wires to connect heater-a/c switch, headlight
switch, turn signal switch, radio, tachometer (factory and aftermarket), ignition switch, cigar lighter,
dimmer switch, brake switch, a/c blower motor, wiper switch, gauges and indicator lights, right and left
door jam switches, shift indicator light, courtesy lights, clock, and glove box.

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 REAR LIGHT SECTION: Includes dome light, taillights, stoplights, left and right turn signals, marker
lights trunk light, backup lights, license plate light, and fuel sending unit.

Note: Be sure to retain Convertible Power Top wiring, Cruise Control wiring,
Sport Lamp wiring, and Tilt Wheel wiring when removing the old harness.
Circuits for these accessories are NOT included in this harness.

2.0 ABOUT THESE INSTRUCTIONS

The contents of these instructions are divided into major Sections, as follows:

1.0 Introduction
2.0 About These Instructions
3.0 Contents of Painless Wire Harness Kit
4.0 Tools Needed
5.0 Pre-Installation and Harness Routing Guidelines
6.0 Harness Installation Instructions
7.0 Specific Circuit Connections
8.0 Wire Connection Index and Fuse Requirements

Sections are divided into subsections and Paragraphs. Throughout these instructions, the Figure
numbers refer to illustrations and the Table numbers refer to information in table form. These are
located in Sections or Paragraphs corresponding to the number. Always pay special and careful attention
to any Notes, especially those in the Tables, and any text marked Caution.

3.0 CONTENTS OF THE PAINLESS WIRE HARNESS KIT

Refer to the list below to take inventory of all the parts in the kit. If anything is found to
be missing, contact the dealer the kit was purchased from or Painless Performance at
(800)423-9696. The 1969/1970 Mustang Wire Harness Kit should contain the following
items:
• The Main Wire Harness, with Fuse Block, pre-wired fuses and relays installed.
• Bag Kit: 1 pkg. of small and 1 pkg. of large Nylon Tie Wraps, Maxi Fuse, 2
Firewall Grommets, Aluminum Plate, and a Fuse Identification Label.
• Fuse block base and cover
• Parts Box containing Terminals, Splices, Spare Fuses etc.

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 Figure 3-1 Painless Wire Harness Kit

4.0 TOOLS NEEDED

In addition to basic hand tools the following will also be needed:
• Crimping Tool Note: Use a quality tool to avoid over-crimping.
• Wire Stripper
• Test Light or Volt Meter
• Small (10 amp or less) Battery Charger

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5.0 PRE-INSTALLATION AND HARNESS ROUTING GUIDELINES
Installation of this wire harness consists mainly of two parts:
• The physical routing and securing of the wire harness.
• The connection of the individual circuits to their components.
These two major tasks are not separate steps, but are integrated together. In other
words, you will route a section of wires and make those sections connections. Route the
next section of wires and make those sections connections. The layout of this 1969-
1970 Mustang harness will dictate how to physically route the harness in your
automobile. The breakouts and connections are very close to the original Ford
harnesses and should fit just as well if not better. It’s a good idea to document how the
original harness was routed as this new one follows most of the same routing. The
fitment greatly depends on to what extent you want to secure and conceal the harness.
Painless offers some general guidelines and routing practices starting in Section 5.2,
GENERAL installation instructions in Section 6.0, and precise instructions concerning
the electrical connections you will make in Section 7.0. To help you begin thinking
through the installation of your wire harness please read the following sections:
5.1 Familiarize yourself with the harness by removing the harness from the box,
laying it out on a table or on the floor and locating each of the harness sections.
Whenever a particular harness section is referred to in these instructions it is
shown in "all caps": ENGINE SECTION.
5.2 It is recommended to route the harness through and around open areas inside
the car. Inside edges provide protection from hazards and also provide places for
tie wraps, clips, and other support.
5.3 Route the harness away from sharp edges, exhaust pipes, hood, trunk and door
hinges.
5.4 Plan where harness supports will be located. Allow enough slack at places where
movement could occur (body to frame, frame to engine, etc.)
5.5 At wire ends, don't depend on the terminals to support the harness. The weight
of the harness could cause terminals to disconnect or copper wire strands to
break.
5.6 The wires should be bundled into groups. Use nylon ties, poly split loom, or tape.

6.0 HARNESS INSTALLATION INSTRUCTIONS

6.1 General Installation
CAUTION: DISCONNECT THE POWER FROM YOUR VEHICLE BY
REMOVING THE NEGATIVE (BLACK) BATTERY CABLE FROM THE
BATTERY.

6.1.1 Mount the base to the left of the stock fuse block location with two of the self
tapping screws from the parts kit. See Figure 6-1.
6.1.2 Try to position the base over the seam/indention in the fire wall, to the left of
the 3 spot welds. This will ensure the screws used to mount the fuse block
base will not be visible in the engine compartment. See Figure 6-2

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 Figure 6-1 Fuse Block Base

Figure 6-2 Fuse Block Base Location

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Figure 6-3 Routing Fuse Block through Instrument Cluster Opening

6.1.2 Route the fuse block and attached harness through the instrument cluster
opening and snap it into the fuse block base with the relays closest to the
windshield. See Figure 6-3 and Figure 6-4. (Note: The fuse block does
not need to be grounded.)

Figure 6-4 Fuse Block Snapped Into Base

6.1.3 Pull all the wires located in the HEADLIGHT SECTION and the TAIL SECTION
down through the gauge cluster opening. It is easier to pull these wires down
than it is to feed all the interior wires up through the opening.
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6.1.4 Locate the aluminum plate included with the parts kit. This plate is used to
cover the factory hole the bulk head connector once used. Install the larger
grommet included with this kit into the hole on the plate. With the grommet
installed, it is easier to center the plate over the hole left in the fire wall.
Using 4 screws included with this kit install the plate over the existing hole in
the fire wall. See Figure 6-5

Figure 6-5 Firewall Plate

6.1.5 Once the plate is installed, remove the grommet. Starting with the Voltage
Regulator connector, feed the HEADLIGHT SECTION through the plate into
the engine compartment. Now with the headlight section pulled through the
plate, the grommet will need to be cut to fit around the wires. Split the
grommet on one side; do not cut the grommet in half. See Figure 6-6
With the grommet cut, install it around the wire and into the plate. It will be
a tight fit.

Figure 6-6 Grommet Split

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 6.1.6 Route the HEADLIGHT SECTION following the same path the factory harness
took. Run the harness long the driver’s side inner fender and shock tower,
down to the hole at the bottom of the core support, through the core
support, and along the bottom of the support over to the passenger side, and
feed the Voltage Regulator, Starter Solenoid, and Alternator wires through
the bottom of the core support on the passenger side back into the engine
compartment. See Figures 6-7 A,B,C

Figure 6-7A Headlight Section Routing Figure 6-7B Headlight Section Routing

Figure 6-7C Headlight Section Routing

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 6.1.7 Now locate the TAIL SECTION. This section of the harness will be routed
down the side of the fuse block, to the left of the dimmer switch, *under the
carpet next to the door sill*, under the rear seat area, over the driver’s side
quarter panel wheel well and into the trunk. There are 2 wires in this section
that need to remain in the interior of the car, wires labeled “C Pillar Light B+
#989” and “C Pillar Light Ground”. Once in the trunk, route the wire down the
side of the rear quarter panel, under the drivers’ side tail light housing,
between the rear panel and the gas filler neck, over to the passengers’ side.
See Figures 6-8 A,B,& C

*The tail light section does not follow the exact factory routing. The factory routing had the
Tail Section wires running through the kick panel area and into the door sill channel. This
routing has been changed due to the light sockets installed on the Painless harness. They will
not fit into the openings at either end of the door sill channel.

Figure 6-8A Tail Section Routing Figure 6-8B Tail Section Routing

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Figure 6-8C Tail Section Routing Figure 6-8D Tail Section Routing

6.1.8 The final sections of the harness to be routed are the ENGINE SECTION
and INTERIOR SECTION. The INTERIOR SECTION must be routed towards
the passenger side of the car, behind the bracing of the dash (See Figure 6-
9) in order to get the ENGINE SECTION over to where it needs to be. The
ENGINE SECTION of the harness is to be fed through the hole in the firewall
under where the shock tower brace meets the firewall. You can install the
grommet now or wait until the wires are pulled through the hole, then slide
the grommet over the wires and into the hole. Running a string or a wire
through the hole from the engine compartment into the interior may be the
easiest way to get everything through the hole. (See Figure 6-10) Tape the
ENGINE SECTION to the string/wire then pull the wire out into the engine
compartment. After this section has been pulled through; carefully install the
smaller grommet from the parts kit into the hole if you have not already done
so. See Figure 6-11

Figure 6-9 Interior Section Routing Figure 6-10 Engine Section Routing

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 Figure 6-11 Engine Section

6.2 Harness Attachment

Harness routing and shaping is and should be a time-consuming
task. Taking your time will enhance the beauty of your installation.
Please be patient and TAKE YOUR TIME!

6.2.1 Mold the harness to contour the firewall, fenders, core support or any other
areas where wires or harness sections are routed. Remember to route the
harness away from sharp edges, exhaust pipes, hood, trunk, and door
hinges.
6.2.2 Attach harness groups to your automobile with clips or zip ties starting at the
fuse block and working you way towards the outer harness circuits. The dash
wires should be routed out of the way of any under-dash obstacles, such as
vent levers, air conditioning controls, radio, etc.
Note: Do not tighten tie wraps and mounting devices until each
individual connection has been made on the particular circuit to be
wire tied. Make all harness attachments LOOSELY, until all connections
are made in each section.
6.2.3 When using wire loom on the visible areas of the harness, it will need to be
wire tied every 12" or so. This will make a very attractive assembly. Under
the dash a tie installed every 6" or so will hold the wires in place nicely.
Remember to take your time.

6.3 Grounding the Automobile

This Painless Wire Harness Kit includes the following ground wires: one front
ground, one tail ground, one ground wire for the interior and a ground wire
for the accessory relay. Making these ground connections will be more
thoroughly covered in the specific connection section. Also, ground wires in
this kit differ from those used by Ford for the 1969 and 1970 Mustangs.

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 All BLK/WHT wires in this kit are ground wires. Any additional circuits
or accessories requiring a ground will have to be added.

6.3.1 Connect a Ground Strap or Cable (even a 10-gauge wire is too small) from
the Negative Battery terminal to the automobile frame.
6.3.2 Connect a Ground Strap from the Engine to the frame. DO NOT RELY
UPON THE MOTOR MOUNTS TO MAKE THIS CONNECTION.
6.3.3 Connect a Ground Strap from the Engine to the Body.

6.4 Terminal Installation and Making Connections

Note: In the following steps you will be making the circuit connections. Before
you start, you should carefully read Sections 7.0, as appropriate, and refer to
Section 8.0 as needed, DOUBLE-CHECKING your routing and length calculations
before cutting any wires and making connections. The majority of the harness
has been pre-terminated.
6.4.1 Have all needed tools and connectors handy.
6.4.2 Select the correct size terminal for the wire application.
6.4.3 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, such as automobile body to frame, frame to engine, etc.
Double-check your calculations.
6.4.4 Strip the insulation from the wire. Strip only enough necessary for the type of
terminal you are using. All of the terminals included in this kit require a ¼”
strip length.
6.4.5 Insert the stripped portion of the wire into the crimp side of the terminal. Be
careful as to not allow the individual wire strands to fray during insertion.
6.4.6 Crimp the terminal onto the wire using the proper jaw location on the
crimpers.
Note: In step 6.4.6 be sure to use the proper jaw location on your crimpers.
Most crimping tools have it color coded for which cavity to use. 18-22ga – Red,
16-14ga – Blue, and 12-10ga – Yellow. CAUTION: DO NOT OVER-CRIMP!
6.4.7 Many connections will be made throughout the installation process. Make
sure each wire is FIRST properly routed and THEN attach. DO NOT ATTACH
FIRST AND ROUTE AFTERWARD.
6.4.8 After all wires are terminated and securely attached, tighten the mounts
and/or zip ties to secure the harness permanently.

6.5 Testing The System

CAUTION: IF YOU HAVE NOT YET DISCONNECTED THE BATTERY
FROM THE AUTOMOBILE, DO SO NOW! DO NOT CONNECT THE
BATTERY CHARGER WITH THE BATTERY CONNECTED.
6.5.1 Use a small (10 amp or less) battery charger to power up the vehicle for the
first time to test the circuits. If there is a problem anywhere, the battery
charger's low amperage and internal circuit breaker will provide circuit
protection.

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 6.5.2 Connect the battery charger's NEGATIVE cable to the automobile chassis or
engine block and its POSITIVE cable to the automobile's positive battery
terminal lug.
6.5.3 INDIVIDUALLY turn on each light, ignition, wiper circuit, etc. and check for
proper operation.
Note: The turn signals will not flash properly if you do not have both the front
and rear bulbs installed and connected.
6.5.4 After all circuits have been checked, disconnect the battery charger and
attach the vehicles battery cables to the battery. REPEAT STEP 6.5.3.

7.0 SPECIFIC CIRCUIT CONNECTIONS

7.1.1 Alternator/Regulator/Solenoid
7.1.2 Connect HEADLIGHT SECTION wire #915 (BLK/YLW) to the Alternator
Output post marked “Bat” or “B+”. See Figure 7-2
7.1.3 Connect HEADLIGHT SECTION wire #914 (ORG) to the Alternator post
marked “FLD”.
7.1.4 Locate the Voltage Regulator Connector in the HEADLIGHT SECTION and
plug it in to the Voltage Regulator, which is on the passenger side inner
fender, under the starter solenoid.
7.1.5 Connect the yellow wire with the preinstalled female bullet connector to
the Noise Capacitor. See Figure 7-2
7.1.6 Connect the Regulator Ground Wire (BLK/WHT) to one of the bolts
holding the regulator in place.
7.1.7 Locate the Maxi Fuse Base in the parts kit and attach it to the passenger
side shock tower. See Figure 7-3
7.1.8 Connect HEADLIGHT SECTION wire #916 to one side of Maxi Fuse Base.
Using the remaining portion of wire #916 connect the other side of the
Maxi Fuse Base to the B+ side of the starter solenoid. See Figure 7-4
7.1.9 Connect HEADLIGHT SECTION wire #919 to the “S” terminal on the
starter solenoid. See Figure 7-5
7.1.10 If you are using a Ballast Resistor, connect HEAD LIGHT SECTION wire
#970 (BRN) to the “I” terminal on the starter solenoid. See Figure 7-5,
also See 7.3.3

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Figure 7-1 Alternator/Regulator Connections

Figure 7-2 Regulator Connections

Figure 7-3 Maxi Fuse Base Mounting

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 Figure 7-4 Wire #916 Connections

7.2 High Amperage Alternator Kit

7.2.1 If an alternator with an output of more than 65 amps is being installed, a
Painless High Amperage Alternator Kit, Painless P/N 30709, will need to be
purchased.

7.3 Engine Section See Figure 7-5.

7.3.1 If using an aftermarket tachometer, connect ENGINE SECTION wire #923

(RED/YLW) to the negative side of the ignition coil.
7.3.2 If the Coil you are using is not internally resisted, a ballast resistor will be
required. If a coil is not internally resisted and a ballast resistor is not used,
the coil will overheat within a few minutes to the point that it will no longer
work. A ballast resistor can be obtained at your local parts store using part
number RU11.
7.3.3 Connect ENGINE SECTION wire #920 (RED/GRN) to one side of the ballast
resistor. Connect the other side of the ballast resistor to the positive post on
the ignition coil. Note: If using a ballast resistor be sure to mount it away
from other wiring and hoses. It gets very hot during operation.
7.3.4 ENGINE SECTION wire #970 (BRN) is used both on a point’s type ignition
system and a Duraspark II System. It is to be connected directly to the
positive post on the ignition coil or the coil feed side on the ballast resistor.
The other end, located in the HEADLIGHT SECTION, is to be connected to the
“I” terminal on the starter solenoid. See7.1.8 also See Figure 7-5.

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Figure 7-5 Points Type Ignition Diagram

7.3.5 Connect ENGINE SECTION Temperature Sending Unit wire #921 (RED/WHT)
to the engine temperature sending unit. Connect ENGINE SECTION Oil
Pressure Sending Unit wire #922 (WHT/RED) to the engine oil pressure
sending unit. Small ring terminals and nuts have been supplied in the parts
kit to make these connections.
7.3.6 Connect the ENGINE SECTION Electric Choke B+ wire #954 (RED) to the
electric choke.
7.3.7 Neutral Safety/Backup Light Switch wire #’s 958, 956 and #919 (2 wires) all
breakout from the firewall in the ENGINE SECTION. #958 (BLK/RED) is the
power source to the switch for the backup lights and #956 (BLK/RED) is the
wire connected to the actual bulbs. Wire IGNITION SWITCH START #919
(RED/BLU) comes from the start terminal on the Ignition Switch and provides
the start signal to the Neutral Safety switch. Wire STARTER SOLENOID #919
(RED/BLU) carries the start signal from the Neutral Safety switch to the Starter
Solenoid. See Figure 7-7.

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 Figure 7-7 NEUTRAL SAFETY SWITCH

7.4 Headlight Section

7.4.1 Locate the 2 wires labeled Brake Warning #968 (PUR). These 2 wires will be
located close to the aluminum fire wall plate you installed earlier. Using splices
supplied with this kit, splice the original factory brake warning switch connector
onto these 2 wires, it makes no difference which PUR wire goes where. Now with
the connector installed on the new harness, plug the connector into the brake
warning switch. See figure 7-8
7.4.2 Following the HEADLIGHT SECTION towards the front of the car, you will find 2
wires next to the core support. These wires are labeled Washer B+ #983 (GRN)
and Washer Pump Ground (BLK/WHT). Using splices supplied with this kit, splice
the original factory washer pump connector onto these 2 wires, matching the
factory wire colors to the new. Now with the connector installed on the new
harness, plug the connector into the washer pump. See figure 7-9
7.4.3 Install the driver’s side marker light connector into its housing on the lower fender.
Make certain that a bulb is installed to avoid having to take the connector back out
to install one.
7.4.4 The next group of wires will be for the Left Turn Signal and Park Lamp. Using
bullet connectors included with the parts kit, match the colors and connect the
following wires onto the factory molded connector: Left Turn Signal #926
(GRN/WHT), Park lights #927 (BLK/YLW), Left Turn/Park Ground (BLK/WHT)

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Figure 7-8 Brake Warning Connector Figure 7-9 Washer Pump Connector

7.4.5 Locate the connector for the Left Headlamp. It is the black connector with 3 wires:
“High Beam #908” (GRN/BLK), “Low Beam #909” (RED/BLK), “Left Headlamp
Ground” (BLK/WHT). Plug this connector into the back of the headlamp. Make
certain that the connector is going on straight; the tabs on the back of the
headlamp have a tendency to bend. See Figure 7-11
7.4.6 The other black connector with 2 wires, “High Beam #908” (GRN/BLK) and “Left
High Beam Ground” (BLK/WHT), is for the 1969 models. This connector plugs into
the separate high beam located in the grille; use the same caution as the
headlamp connector. For the 1970 models this connector can be cut off and the
wires tied or taped into the harness. See Figure 7-11
7.4.7 “Horn B+ #924” needs to be routed and connected to the driver’s side horn.
7.4.8 All BLK/WHT ground wires located in the HEADLIGHT section share the same
ground wire. This is a 4’ wire labeled “Front Ground” located close to the center of
the core support. Using a ring terminal, connect this wire to a good clean ground.
One of the bolts on the center grill support makes for a good ground. See Figure
7-10
7.4.9 Repeat all of the above steps to the components located on the passenger’s side.
7.4.10

Figure 7-10 Front Ground Connection

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 Figure 7-11 Headlight Section Connections
7.5 Rear Light Section
7.5.1 The REAR LIGHT SECTION consists of: Taillights, Stoplights, Left and Right
Turn Signals, Trunk Light, Backup Lights, License Plate Light, Dome Light, a
Ground wire and Fuel Sending Unit.

Figure 7-10 Rear Light Section and Dome Light

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7.5.2 Locate the factory lead coming from the dome light in the upper left side of
the trunk. Connect the wire labeled “To Dome Light #945” (BLK/BLU) to this
lead. If no lead exists, route wire #945 to the dome light.
7.5.3 Trunk Light B+ #946 needs to be connected to the truck light switch on
models equipped with this feature. A power wire from the switch to the trunk
light must be supplied by the customer.
7.5.4 “Fuel Sending Unit #939” (YLW/WHT) needs to be connected to the factory
fuel sending unit wire coming from the tank into the trunk. If this wire was
disconnected at the sending unit and not cut during removal of the factory
harness, connect #939 to the fuel sending unit.
7.5.5 Install the driver’s side marker light connector into its housing. Make certain
that a bulb is installed to avoid having to take the connector back out to install
one.
7.5.6 Using bullet connectors included with the parts kit, match the colors and
connect the following wires onto the factory molded connector coming from
the drivers’ side reverse lights: “Back Up Lights #956” (BLK/RED) and “Left
Rear Back Up Ground” (BLK/WHT)
7.5.7 All BLK/WHT ground wires located in the Rear Light section share the same
ground wire. This wire, labeled “Ground”, can be found coming from the
group of wires near the left rear tail light. Using a ring terminal, connect this
wire to a good clean ground.
7.5.8 A new tail light socket has been provided. With a bulb installed, push the new
socket into the tail light lens. See Figure 7-11
7.5.9 Connect wire “License Plate Light #962” to the lead coming from the license
plate, or if no lead exists, to the light itself.
7.5.10 Repeat the above steps to connect the passenger side marker light, reverse
light, and the right tail/stop/turn lights.

Figure 7-11 Tail Light Socket

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 7.6 Interior Lighting
7.6.1 If possible leave your existing interior light wiring intact. It will be necessary
to reuse some of the original wiring or add new wiring were applicable.
However, some parts like the automatic shift indicator socket are not included
in this kit, but you can purchase them at aftermarket retailers.
7.6.1 “Left C Pillar Light B+ #989” (BLK/BLU) and “C Pillar Light Ground”
(BLK/WHT) were routed when the REAR LIGHT SECTION was routed. These
2 wires need to be connected to the drivers’ side C Pillar Light on models
equipped with this feature. The same goes for the passenger side C pillar
light. Route the wires under the door sill plate, up the rear quarter wheel tub
and to the C pillar light.
7.6.2 Models equipped with door panel lights will need to route and connect
INTERIOR SECTION wires “Left Door Light B+#989” (BLK/BLU) and “Door
Light Ground” (BLK/WHT) to the driver side door lights. Do the same for the
passengers’ side door lights.
7.6.3 With the door jamb switches removed from the door jamb, route the left door
switch wires “To Left Door Jamb Switch B+ #987” (GRN/YLW) and “To Left
Door Jamb Switch B+ #987” (BLK/BLU) through the door jamb switch holes.
You may have to insert a wire or string into the hole, like what was instructed
in 6.1.8, in order to get the wires through. The original connector from the
factory harness will need to be reused. Using a small screwdriver, press in the
retaining tab on the side of the factory terminal and pull the terminal from
the connector. See Figure 7-12 Connect the 2 new wires to the door jamb
switch connector; it makes no difference which wire goes where. Snap the
connector onto one of the new door jamb switches provided and then install
the switch into the door jamb. Connect the jamb switch for the passengers’
side in the same manner. See Figure 7-13

Figure 7-12 Door Jamb Switch Connector Figure 7-13 Door Jamb Switch

7.6.4 Locate wire “Courtesy Light #989” (BLK/BLU) and connect it to the drivers’
side courtesy light. There is also a “Courtesy Light #989” (BLK/BLU) wire
located in group of wires labeled “Glove Comp.” This wire needs to be
connected to the passenger side courtesy light.

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7.7 Dimmer Switch Connections
7.7.1 Connect the Dimmer switch connector to the dimmer switch.
7.8 Headlight Switch
7.8.1 Connect the HEADLIGHT SWITCH connector to the headlight switch. Figure
7-14 has been provided to verify the connector pin out in the even you need
to trouble shoot a problem.

Figure 7-14 Headlight Switch Connections

7.9 Turn Signal Switch and Brake Light Switch

7.9.1 The original Turn Signal Switch Connector from the old harness will need to
be re-used. Carefully remove the original wires, ONE WIRE AT A TIME,
replacing them with the new wires. The new wire colors match the
original colors in the old harness. Use a small pair of needle nose pliers
or a flat screwdriver to remove the original terminals from the connector
cavities.

Figure 7-15 Turn Signal Switch Pin Out

25
 7.9.2 Route the BRAKE SWITCH wires “Brake Switch B+ #917” (GRN/RED) and
“Brake Switch Output #918” (GRN) down to the Brake Switch located on the
brake pedal. Leave enough slack in the wires to allow for the brake pedal
movement. These wires are not polarity specific, in other words it does not
matter which wires goes onto each side of the switch. See Figure 7-16.

Figure 7-16 Brake Switch

7.10 Gauge Cluster Section

7.10.1 The connector supplied on the Painless is installed to be used on factory
clusters that DO NOT have a tachometer. The connector must be re-
pinned in order to make the connections to gauge clusters with a
factory tachometer. To remove the terminals from the connector, insert a
paperclip or small flat head screwdriver and press in the terminal’s locking tang
as shown in Figure 7.17. If your cluster does not have a tach, you can simply
plug the connector in, however see 7.10.2 about the unused wires.

Figure 7-17 Gauge Cluster Connector

26
7.10.2 Use Figure 7-18 to correctly pin out your gauge cluster connector. The 1-18
numbers shown below match those molded onto the outside of the connector.
Some wires share the same number and or color. No matter which of the 2
factory clusters you have, with a tachometer and without, you will have unused
wires. These wires will either be 2 UNPROTECTED constant battery power
wires or 3 switched power wires. These unused wires will need to be taped and
properly stowed away to prevent a short. Use male and female bullet terminals
from the parts kit to connect the Red #972 and Yellow #972 wires together for
applications where a factory tach is being used. This is a step that must not be
skipped. See Figure7-18 for the wires not used for each configuration.

Figure 7-18 Gauge Cluster Pin Out

7.10.3 For those who are using a factory tachometer, the Coil B+ #920 (RED/GRN)
wire loop located in the Gauge Cluster Group needs to be cut and connected to
the leads coming from the tachometer. For those who do not have a factory
tach, this step should be skipped and the wire should be left as a loop. See
Figure 7-19

Figure 7-19 Factory Tach. Connections

27
 7.10.4 The harness you have purchased also has provisions, located in the Gauge
Cluster group, for aftermarket tachometer connections. If using an aftermarket
tach, wire #923 (RED/YLW) is the tach signal wire. This wire should have
been also connected to the negative side of the coil during the ENGINE
SECTION installation See 7.3.1. Wire #930 (BLU/RED) needs to be connected
to the tach light. If no aftermarket tach is being used, simply tape and stow
these wires in the harness. Wire #930 could also be used to power illumination
to any other aftermarket gauges.

7.11 Ignition Switch

7.11.1 Due to the different locations of the ignition switch between the 1969 models
and the 1970 models, modifications to the Ignition Switch Group of wires may
be required. Those with the steering column mounted ignition switch found on
the 1970 models may need to cut the zip tie, located where the Ignition Switch
wires breaks out from the main harness, to get a little bit of extra length to
make the connection to the connector at the steering column.
7.11.2 The original Ignition Switch connector must be reused to make the following
connections. See Figures 7-20A and 7-20B To unpin the factory terminals,
follow the same procedure used to remove the gauge cluster pins. The ignition
switch terminals can be stubborn, but with patience, they will come free. The
locking tang on the terminal is on the opposite side of the terminal of the split.
Care should be taken as not to break or disfigure the original connector. There
is however a replacement connector pigtail available for the ignition switch
found on the 1969 models, Car Quest part# US45H
7.11.3 Once the connector is unpinned, use Figure 7-20C to connect the wires from
the Painless harness to the ignition switch connector. With the connector
properly pinned out, connect the connector to the ignition switch.

Figure 7-20A 1969 Ign. Sw. Connector Figure 7-20B 1970 Ign. Sw. Connector

28
 Figure 7-20C Ignition Switch Connection

7.11.4 Ign. Switch Light #930 (BLU/RED) is supplied for the 1969 models. Splice this
wire onto the ignition switch illumination lamp located on the metal bracket
behind the dash which helps hold the ignition switch. The factory Ford color
(BLK/YLW) was not used in order to keep all gauge and back lighting wires the
same color. If an ignition switch lamp is not being used, tape the end of the
wire and stow it away in the harness. This wire could also be used to power
illumination to any aftermarket gauges. See Figure 7-21

Figure7-21 Ignition Switch Lamp

29
7.12 Wiper Switch/Wiper Motor

7.12.1 Locate the Wiper Switch connector and connect it to the wiper switch. Figure
7-22 has been provided to verify the connector pin out in the even you need
to trouble shoot a problem.

Figure 7-22 Wiper Switch Connection

7.12.2 Locate the 4 wiper motor wires in the ENGINE SECTION. Using male and
female bullet terminals connect these 4 wires to the factory lead coming
through the wiper cowl. Terminals were left off and extra length was given to
these wires to allow the customer the option of running the wires through the
wiper cowl to the motor for a cleaner install. Match the new wires of the
Painless harness to the factory colors. See Figure 7-23

Figure 7-23 Wiper Motor Terminals and Connector

30
7.13 Interior Ground

7.13.1 All BLK/WHT ground wires located in the Interior Section share the same
ground wire. This wire, labeled “Interior Ground”, can be found at the same
breakout from the main harness as the Engine Section. Using a ring terminal
provided in the parts kit, connect this wire to a good clean ground, such as
the bracing behind the instrument cluster. See Figure 7-24

See Figure 7-24 Interior Ground

7.14 Console Wiring

7.14.1 The Console group of wire consists of 6 wires. Route these wires down
behind the dash and to the console.
7.14.2 Connect Console Light B+ # 930 (BLU/RED) and the Console Light Ground
(BLK/WHT) to the console light
7.14.3 Connect Gear Ind. Light B+ # 930 (BLU/RED) and the Gear. Ind. Light
Ground (BLK/WHT) to the Gear Indicator Light located on the shifter.
7.14.4 Connect Cigar. Lighter B+ #903 (BLU/WHT) and Cigar. Lighter Ground
(BLK/WHT) to the Cigarette Lighter (Located in the dash on the ’70 models).

7.15 Heater Switch and Blower motor

7.15.1 A new heater switch connector has been supplied. Simply plug this connector
onto your factory heater switch. See Figure 7-25 and 7-26. Figure 7-26
shows the location of the heater switch. A connector was not available at the
time the photo was taken.
7.15.2 If your model is equipped with a factory A/C, follow the proceeding steps. If
you car does not have the factory A/C skip to 7.15.6.
7.15.3 Locate the 6” green wire coming from the heater switch connector. The end
will need to be connected to the back tab on the A/C Mode Switch. See
Figure 7-26

31
7.15.4 Connect the A/C Mode Switch to De-Ice Switch #994 (LT.GRN) wire to the
front tab on the A/C Mode Switch. See Figure 7-26
7.15.5 Located behind the passenger side dash panel there is an A/C De-Icing
Switch. Connect the A/C Comp. Clutch Solenoid #998 (GRN) wire and the A/C
Mode Switch to De-Ice Switch #994 (LT.GRN) wire to the De-Icing Switch. It
makes no difference where each wire connects. See 7-27

Figure 7-25 Heater Switch Connector

Figure 7-26 A/C Mode Switch

7.15.6 Connect the 3 blower motor wires to the blower motor. If the factory pigtail is
still on hand, you can match the colors to the existing factory pigtail. If not,
connections can be made to the blower motor as followed: the Low #975
(RED) wire will connect to the top tang, High #973 (BLK) will connect to the
bottom tang, and Med. #974 (BLU) will connect to the side tang. These
wires will be about 18” too long for those with factory A/C cars, simply coil
the excess wire.
32
 Figure 7-27 A/C De-Icing Switch
7.16 Radio

7.16.1 Connect the 2 power wires, Constant #940 (RED) and Switched #941
(YLW/BLK), to the appropriate power locations on the radio.
7.16.2 Connect Radio Light B+ #930 (BLU/RED) to the radios illumination.

7.17 Glove Compartment

7.17.1 Not all models will have the following features. If your model is not equipped
with a Map Light or Clock, tape the ends and stow away the entire Glove
Comp. Group.
7.17.2 Locate the group of wires labeled Glove Comp.
7.17.3 Connect wires Map Light B+ #900 (GRN/YLW) and Map Light Switch Ground
(BLK/WHT) to the molded connector coming from the Map light. Connect the
Glove Box Light Switch #990 (BLK) to the lead coming from the Map Light
Switch. See Figure 7-28

33
 Figure 7-28 Map Light Wiring
7.17.4 The opposite end of wire #999, connected in the step above, is to be
connected to the glove compartment switch. This wire will ground the Map
Light, complete the circuit, causing it to illuminate when the glove
compartment door is opened.
7.17.5 To make the clock connections See Figures 7-29 A or B. Figure 7-29A
allows the installer to retain the factory clock harness, eliminating splicing and
extra work. Figure 7-29B shows the connections and splices that must be
made in order for things to function properly without the use of a factory
harness.

Figure 7-29A Clock Wiring (using factory clock harness)

Figure 7-29B Clock Wiring

34
7.18 Accessory Relay

7.18.1 The final component in this Mustang chassis harness is a 20amp accessory
relay output. The relay is preinstalled in the fuse block, powered, and fused.
See Figure 7-30.

Figure 7-30 Accessory Relay Diagram

8.0 WIRE CONNECTION INDEX AND FUSE REQUIREMENTS

8.1 Wire Connection Index

In each section, connect the wire, as identified by its wire color, to the
appropriate item in the Wire Ending Point column.
Table 8.2 is divided into sections that correspond to the sections of your wire
harness. (ENGINE SECTION, HEADLIGHT SECTION, GAUGE CLUSTER
SECTION, UNDER DASH SECTION, INTERIOR LIGHTING SECTION, AND REAR
LIGHT SECTION) The index is divided vertically into six columns. COLOR,
GAUGE, NUMBER, WIRE PRINT, WIRE STARTING POINT, and WIRE ENDING
POINT.
The information in these columns are for reference to help identify where each
wire and what it needs to be connected to. These columns tell where each wire
originates, the wire number, its function and which section of the harness the
wire is in.
The column labeled NO. contains a 900-series number used to identify the
wires in the diagrams in Section 6.0 and 7.0 of this manual.
The wire numbers which occur TWICE in this index indicate the connection of
BOTH ENDS or a splice of wires inside the harness. Most wire segments are
pre-connected at the WIRE STARTING POINT such as all the wires originating
from the fuse panel. The WIRE ENDING POINT is where that wire needs to be
connected.

35
 Table 8.1 Fuse Requirements

Color Gauge Number Wire Print Wire Wire Ending

Starting Point
Point
ENGINE SECTION
Red 18 #954 Electric Choke B+ Fuse Block Electric Choke
Red/Grn 14 #920 Coil B+ Fuse Block Coil “+”
Red/Wht 18 #921 Temperature Sending Gauge Temperature
Unit Cluster Sending Unit
Wht/Red 18 #922 Oil Pressure Sending Gauge Oil Pressure
Unit Cluster Sending Unit
Brn 16 #970 Ignition Bypass Starter Coil “+”
Solenoid “I”
Post
Red/Ylw 18 #923 Tachometer Signal Tachometer Coil “-“
Blk/Red 18 #958 Back-Up Light Switch Fuse Block Neutral
B+ Safety/Back-Up
Lights Switch
Blk/Red 18 #956 Back-Up Lights Back-Up Back-Up Lights
Light Switch
Red/Blu 14 #919 Ignition Switch “Start” Ignition Neutral
Switch Safety/Back-Up
Light Switch
Red/Blu 14 #919 Starter Solenoid Neutral Starter
Safety/Back- Solenoid “S”
Up Light Post
Switch
Grn 16 #998 A/C Comp. Clutch A/C De-Icing
Solenoid Compressor Switch
Table 8.2 Wire Connection Index (1 of 7)

36
 Color Gauge Number Wire Print Wire Wire Ending
Starting Point
Point
HEADLIGHT SECTION
Brn 16 #970 Ignition Bypass Coil “+” Starter
Solenoid “I”
Post
Red/Blu 14 #919 Starter Solenoid Neutral Starter
Safety/Back- Solenoid “S”
Up Light Post
Switch
Blk/Ylw 10 #916 Battery Source (Maxi Fuse Block Starter
Fuse) Solenoid B+
Wht 14 #914 Alternator Exciter Voltage Alternator
Regulator “FLD” Post
Blk/Ylw 10 #915 Alternator Output Fuse Block Alternator
Output Post
Blu/Ylw 16 #924 Horn B+ Horn Relay Left and Right
Horns
Grn/Wht 18 #926 Left Front Turn Signal Turn Signal Left Front
Switch Turn Signal
Wht/Blu 18 #925 Right Front Turn Signal Turn Signal Right Front
Switch Turn Signal
Blk/Ylw 18 #927 Park Lights Headlight Front Park
Switch Lights
Red/Blk 14 #909 Low Beam Dimmer Low Beam
Switch Headlights
Grn/Blk 14 #908 High Beam Dimmer High Beam
Switch Headlights
Pur 18 #968 Brake Warning Brake Light Proportioning
Valve
Grn 16 #983 Washer B+ Wiper Switch Washer Motor
Dimmer Switch
Grn/Blk 14 #908 Dimmer Switch (High High Beams Dimmer
Beam) Switch
Red/Blk 14 #909 Dimmer Switch (Low Low Beams Dimmer
Beam) Switch
Red/Ylw 14 #907 Dimmer Switch B+ Headlight Dimmer
Switch Switch “Center
Spade”
Table 8.2 Wire Connection Index (2 of 7)

37
 Color Gauge Number Wire Print Wire Starting Wire Ending
Point Point
Headlight Switch
Blk/Orn 12 #928 Headlight Switch B+ Fuse Block Headlight
Switch
Terminal “B"
Blu/Red 16 #930 Instrument Panel Lighting Gauges, Console, Headlight
Radio, and Tach Switch
Lights Terminal “I”
Red/Ylw 14 #907 Dimmer Switch B+ Dimmer Switch Headlight
Switch
Terminal “H”
Blk/Ylw 16 #927 Park Lights Park Lights Headlight
Switch
Terminal “P”
Blk 14 #929 Tail Lights Tail Lights Headlight
Switch
Terminal “R”
Grn/Ylw 18 #959 Dome B+ to Headlight Fuse Block Headlight
Switch (D1) Switch
Terminal (D1)
Blk/Blu 18 #959 Dome B+ to Headlight Dome and Trunk Headlight
Switch (D2) Lights Switch
Terminal (D2)
Turn Signal Switch
Grn/Orn 14 #949 Left Rear Turn Signal Left Rear Turn Signal
Turn/Stop Light Switch
Wht/Red 16 #951 Emergency Flasher Switch Emergency Flasher Turn Signal
B+ Switch
Lt. Blu 14 #952 Turn Signal Flasher Switch Turn Signal Flasher Turn Signal
B+ Switch
Lt. Grn 14 #918 Brake Switch Output Brake Switch Turn Signal
Switch
Lt. 18 #926 Left Front Turn Signal Left Front Turn Turn Signal
Grn/Wht Signal Switch
Wht/Blu 18 #925 Right Front Turn Signal Right Front Turn Turn Signal
Signal Switch
Orn/Blu 14 #948 Right Rear Turn Signal Right Rear Turn Signal
Turn/Stop Light Switch
Blu/Ylw 18 #963 To Horn Switch Horn Relay Turn Signal
Switch
Ylw 18 Horn Switch Ground Chassis Ground Turn Signal
Switch
Brake Switch
Grn/Red 14 #917 Brake Switch B+ Fuse Block Brake Switch
Grn 14 #918 Brake Switch Output Turn Signal Switch Brake Switch
Table 8.2 Wire Connection Index (3 of 7)
38
 Color Gauge Number Wire Print Wire Starting Wire Ending
Point Point
GAUGE SECTION
Wht/Red 18 #922 Oil Pressure Sending Unit Oil Sending Unit Gauge Cluster
Grn/Blk 18 #936 High Beam Indicator Dimmer Switch Gauge Cluster
Blk/Grn 18 #935 Voltmeter Source & Constant Gauge Cluster
Gauges B+ Voltage Unit
Blk 18 #969 Dash Ground Interior Ground Gauge Cluster
Ylw/Wht 18 #939 Fuel Sending Unit Fuel Sending Gauge Cluster
Unit
Blk/Grn 18 #935 Voltmeter Source & Fuse Block Gauge Cluster
Gauges B+)
Blu/Red 18 #930 Cluster Lighting Headlight Gauge Cluster
Switch
Ylw 18 #972 Ammeter Loop Fuse Block Gauge Cluster
Red 18 #972 Ammeter Loop Starter Solenoid Gauge Cluster
Wht/Blu 18 #938 Right Turn Indicator Turn Signal Gauge Cluster
Switch
Red/Wht 18 #921 Temperature Sending Unit Temperature Gauge Cluster
Sending Unit
Pur 18 #968 Brake Warning Brake Warn Gauge Cluster
Switch
Red/Ylw 18 #935 Voltmeter Source & Fuse Block Gauge Cluster
Gauges B+)
Ylw/Blk 18 #935 Voltmeter Source & Fuse Block Gauge Cluster
Gauges B+)
Grn/Wht 18 #937 Left Turn Indicator Turn Signal Gauge Cluster
Switch
Red/Grn 14 #920 Coil B+ Fuse Block Coil
Blu/Red 18 #930 Tachometer Light B+ Headlight Aftermarket
Switch Tach
Red/Ylw 18 #923 Aftermarket Tachometer Coil Aftermarket
Signal Tach.
Ignition Switch Connections
Ylw 12 #934 Ignition Switch B+ Maxi Fuse Ignition Switch
Blk/Grn 14 #932 Ignition Switch Accessory Fuse Block Ignition Switch
Grn/Red 12 #933 Ignition Switched Ignition Fuse Block Ignition Switch
Red/Blu 14 #919 Starter Solenoid Neutral Ignition Switch
Safety/Back-Up
Light Switch
Pur 18 #968 Brake Warning Brake Warn Ignition Switch
Switch
Blk/Ylw 18 #930 Ign. Switch Light Headlight Ignition Switch
Switch
Table 8.2 Wire Connection Index (4 of 7)

39
 Color Gauge Number Wire Print Wire Wire Ending
Starting Point
Point
Wiper Switch
Orn/Wht 16 #982 Wiper Motor B+ Fuse Block Wiper Switch
Blu 16 #977 To Wiper Switch/To Wiper Wiper Motor Wiper Switch
Motor (HIGH)
Wht 16 #979 To Wiper Switch (Low) Wiper Motor Wiper Switch
Red 16 #982 Wiper Motor B+ Fuse Block Wiper Switch
Blk 16 #981 Wiper Motor Park Wiper Motor Wiper Switch
Grn 16 #983 Washer B+ Washer Motor Wiper Switch
Wht/Blk 16 #905 Wiper Switch B+ Fuse Block Wiper Switch
Wiper Motor
Blu 16 #977 To Wiper Switch/To Wiper Wiper Switch Wiper Motor
Motor (HIGH)
Wht 16 #979 To Wiper Switch (Low) Wiper Switch Wiper Motor
Red 16 #982 Wiper Motor B+ Wiper Switch Wiper Motor
Blk 16 #981 Wiper Motor Park Wiper Switch Wiper Motor
Blower Motor
Blk/Ylw 14 #973 Blower Motor (High) Heat-A/C Blower Motor
Switch
Blu 14 #974 Blower Motor (Med) Heat-A/C Blower Motor
Switch
Red 14 #975 Blower Motor (Low) Heat-A/C Blower Motor
Switch
Blower Motor Switch
Blk/Ylw 14 #973 Blower Motor (High) Blower Motor Heat-A/C Switch
Blu 14 #974 Blower Motor (Med) Blower Motor Heat-A/C Switch
Red 14 #975 Blower Motor (Low) Blower Motor Heat-A/C Switch
Lt. Grn 18 #994 A/C Mode Switch / De-Ice De-Ice Switch A/C Mode Switch
Switch
Ylw 14 #967 Blower Motor Power Fuse block Heat-A/C Switch
De-Icing Switch
Lt. Grn 18 #994 A/C Mode Switch / De-Ice A/C Mode De-Icing Switch
Switch Switch
Grn 16 #998 A/C Comp. Clutch Solenoid A/C De-Icing Switch
Compressor
Interior Lighting Section
Blu/Red 18 #930 Gear Ind. Light B+ Headlight Gear Indicator Light
Switch
Blk/Wht 18 - Gear Ind. Light Ground Interior Gear Indicator Light
Ground
Blu/Red 18 #930 Console Light B+ Headlight Console Light
Switch
Table 8.2 Wire Connection Index (5 of 7)

40
Color Gauge Number Wire Print Wire Wire Ending
Starting Point
Point
INTERIOR LIGHTING SECTION (CONT.)
Blk/Wht 18 - Console Light Ground Interior Console Light
Ground
Grn/Ylw 18 #900 Map Light B+ Fuse Block Map Light
Blk/Wht 18 - Map Light Switch Ground Interior Map Light Switch
Ground
Blk 18 #990 Glove Box Light Switch Map Light Glove Box Light
Switch Switch
Grn/Ylw 18 #988 To Right Door Jamb Switch Fuse Block Right Door Jamb
B+ Switch
Blk/Blu 18 #988 To Right Door Jamb Switch Interior Right Door Jamb
Lighting Switch
Circuit
Blk/Blu 18 #989 Right Courtesy Light Right Door Right Courtesy Light
Jamb Switch
Blk/Blu 18 #989 Right C Pillar Light B+ Interior Right C Pillar Light
Lighting
Circuit
Blk/Wht 18 - Right C Pillar Light Ground Interior Right C Pillar Light
Ground
Blk/Blu 18 #989 Right Door Light B+ Interior Right Door Light
Lighting
Circuit
Blk/Wht 18 - Right Door Light Ground Interior Right Door Light
Ground
Grn/Ylw 18 #987 To Left Door Jamb Switch B+ Fuse Block Left Door Jamb
Switch
Blk/Blu 18 #987 To Left Door Jamb Switch Interior Left Door Jamb
Lighting Switch
Circuit
Blk/Blu 18 #989 Left Courtesy Light Left Door Left Courtesy Light
Jamb Switch
Blk/Blu 18 #989 Left C Pillar Light B+ Interior Left C Pillar Light
Lighting
Circuit
Blk/Wht 18 - Left C Pillar Light Ground Interior Left C Pillar Light
Ground
Blk/Blu 18 #989 Left Door Light B+ Interior Left Door Light
Lighting
Circuit
Blk/Wht 18 - Left Door Light Ground Interior Left Door Light
Ground
Table 8.2 Wire Connection Index (6 of 7)

41
 Color Gauge Number Wire Print Wire Wire Ending
Starting Point
Point
Accessories
Orn 16 991 Accessory Relay Power Accessory 20 Amp or less
Output (20 Amp Max) Relay Accessory
Blk 18 992 Accessory Relay Activation Accessory Ground Activation
Ground Relay Switch
Blu/Red 18 930 Radio Light B+ Headlight Light in Radio
Switch
Red 18 940 Constant Radio B+ Fuse Block Radio
Ylw/Blk 18 941 Switched Radio B+ Fuse Block Radio
Blu/Wht 18 #903 Cigar. Lighter B+ Fuse Block Cigar. Lighter
Blk/Wht 18 - Cigar. Lighter Ground Interior Cigar. Lighter
Ground
Rear Light Section
Blk/Blu 18 945 To Dome Light Headlight Dome Light
Switch/Jamb
Switches
Blk/Red 18 956 Left/Right Back-Up Lights Back-Up Light Back-Up
Switch Lights
Grn/Orn 14 949 Left Rear Turn Signal Turn Signal Left Rear
Switch Turn/Stop
Signal
Orn/Blu 14 948 Right Rear Turn Signal Turn Signal Right Rear
Switch Turn/Stop
Signal
Ylw/Wht 18 939 Fuel Sending Unit Fuel Gauge Fuel Sending
Unit
Blk 16 929 Left/Right Tail Lights Headlight Tail Lights
Switch
Blk 18 962 License Plate Light B+ Headlight License Plate
Switch Light
Grn/Ylw 18 946 Trunk Light B+ Headlight Trunk Light
Switch
Brn 18 #929 Left/Right Park Lights Headlight Park Lights
Switch
Blk/Wht 18 - Ground(s) Rear Ground -
Table 8.2 Wire Connection Index (7 of 7)

42
 Painless Performance Products, LLC
Limited Warranty and Return Policy
Chassis harnesses, fuel injection harnesses, and Trail Rocker units are 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.

43