mm) or a 4" (100 mm) hole, depending on

CgYdSXUT !"f <YWXd DQSX_]UdUb the size of the tachometer you’re installing.

 CgYdSX If the gauge is too snug, use a file to slightly
enlarge the opening. (Diagram A)
&2,/ 6ecU2\_S[ CAUTION: Read these instructions
2QddUbi     3. Slip the mounting bracket or the VDO
@Y^" thoroughly before making installation. Do
@Y^# Spin-Lok™ Clamp over the back of the ta-
not deviate from assembly or wiring
   
chometer as shown in Diagram B. Tighten
5\USdb_^YS _b @Y^$ instructions. Always disconnect battery
until the tachometer can no longer be ro-
3_^db_\ ground before making any electrical
tated by hand. DO NOT OVERTIGHTEN.
2_h -7b_e^T connections.

CgYdSXUT!"f <YWXd DQSX_]UdUb

CgYdSX

6ecU2\_S[ Tachometer Installation: Wiring the Tachometer:

3@@7>E    

@Y^" NOTE: If you will use your tachometer with 1. Run wires from the tachometer loca-
@Y^#
B+ B+

D+    
an alternator, you must first wire it (Diagram tion to a:
W
@Y^$ E) and calibrate it (Diagrams D & F) before
²G³_b²B³_b²!³
D- F
a) +12 volt power terminal.
dUb]Y^Q\_^ -7b_e^T mounting it. For all other applications, start
Q\dUb^Qd_b here. (This positive power source
MUST BE SWITCHED, and
Diagram E 1. Select the location where you will mount should be protected with a fuse);
Proper wiring of the VDO Programmable Tachometer with typical ignition systems the gauge, and mark a center point.
[text continues] ¨
2. Cut either a 3¹⁄₈" (80 mm) or a 3³⁄₈" (85
➊ ➋ Adjust the
potentiometer
Compare the VDO Tachometer on the back of
reading with that of a reference the tach. CAUTION!!! Parts List
tachometer. Item Description Quantity
1. Programmable Tachometer
These instructions contain informa- (3¹⁄₈" [80 mm] diameter) 1 or
REFERENCE TACHOMETER Programmable Tachometer
tion about gauges of different sizes. (3³⁄₈" [85 mm] diameter) 1 or

Consequently, you must determine Programmable Tachometer

(4" [100 mm] Tachometer 1
the size of your gauge before cutting 2. Lamp Socket (Push in, wedge-type) 2
3. Light Bulb (12-volt / G.E. #158 or equivalent) 2
any holes! 4. VDO Spin-Lok™ Clamp or mounting bracket 1
5. Installation Instructions 1
CRANKSHAFT When the VDO Tachometer reading
matches that of the reference tachom-
eter, the adjustment is complete.

Diagram F Tools and Materials Needed For Installation:

Fine adjustment of the VDO Tachometer when used with an alternator
16 Gauge stranded, insulated wire
Non-insulated ¼" spade connectors
3¹⁄₈" or 3³⁄₈" or 4" hole saw Programmable Tachometer
Drill and drill bit set Installation Instructions
Half-round file Instruction Sheet # 0 515 012 020
Rev. 05/09
Tape measure or ruler INSTRUCTIONS FOR THE INSTALLATION OF THE PROGRAMMABLE TACHOMETER
Small tools: wrench or nut driver, utility ARE CONTAINED HEREIN. USE IS RESTRICTED TO 12-VOLT NEGATIVE GROUND
ELECTRICAL SYSTEMS. LIGHT BULB, IF SUPPLIED, IS 12 VOLT.

knife, pliers, etc.

To Begin, go to #➊
 b) light switch (also after the fuse use with an ignition coil or electronic control
Tachometer: “A” “B” in the fuse box); box; Diagram D shows how to set the switches
3¹⁄₈" (80 mm) 3¹⁄₈" (80 mm) 3.32" (84 mm) when using the tachometer with an alterna-
c) good ground location;
3³⁄₈" (85 mm) 3³⁄₈" (85 mm) 3.56" (89 mm) tor.
4" (100 mm) 4" (100 mm) 4.16" (104 mm) =Qh") d) location of the signal source (al-
'#]] !)%]] ternator, coil or other tachometer On tachometers used with alternators only,
Table 1 signal source). fine tuning must be performed (after you set

2UjU\4YQ]UdUb
the switches) by using the potentiometer on
RPM
2. Connect wiring to the appropriate ta- the rear of the instrument. See Diagram F.
chometer terminals as shown in Diagram E.
   
At this point, the installation and wiring
    Configuring the VDO Tachometer: of your new VDO Programmable Tachom-
eter is complete. Turn on the ignition and
!) Before the tachometer will function prop- the lights in the car and check to see that
-²1³ @_dU^dY_]UdUbV_b erly with your engine, you will need to set
SQ\YRbQdY^WdQSX_]UdUb $(]] the instrument and light work properly. If
8_ecY^W4YQ]UdUb the switches as shown in Diagrams C or D. they don’t, re-check your wiring, referring
Diagram C shows how to set the switches for to Diagram E.
Diagram A
Gauge dimensions
Use this table if your      
tachometer signal comes  
   
  +(  from the alternator.   ' $ %  ,
!"# $ !"# $ )*+ )*+ )*+ )*+ )*+
         
   , !( % & , !(  ! % &
*--
   !( ! & !' !( ! ! !" & !' 
 ).  
       !, (" !' (! ! ($ !$ (! !( !,
)*#     $  # /  /0
b 1    - 1
      !" #
$ 2 32
       !" !$ # -  ) 

1      + +  

$OWHUQDWRU           
    %     %
&
   '($ (
   $
(+  +      ,-).
 +      ,-*./
Diagram B     ,.0   
      /
Proper mounting with VDO’s Spin-Lokä Clamp or mounting bracket Z

&'  ( ) !( * "

¸
)     $"" !
Use this table if you
Z !
are using your tachom-   #ê ! $%    
"
eter with an ignition
coil or an electronic &UDQNVKDIW             
          
transmission control
box. 45 ê !6   +  3  
ê
&'  786 !6  / $"/2! $# 3 /
 "766

Diagram C Diagram D
With Coil or ECM, use this table to set switches for number of cylinders With alternator, use this table to calculate pulses/revolution & set switches