Siemens VDO Limited Warranty
VDO North America warrants all merchandise against defects in factory workmanship and materials for a period of 24 months after purchase. This
warranty applies to the first retail purchaser and covers only those products exposed to normal use or service. Provisions of this warranty shall not
apply to a VDO product used for a purpose for which it is not designed, or which has been altered in any way that would be detrimental to the
performance or life of the product, or misapplication, misuse, negligence or accident. On any part or product found to be defective after examination
by VDO North America, VDO North America will only repair or replace the merchandise through the original selling dealer or on a direct basis. VDO
North America assumes no responsibility for diagnosis, removal and/or installation labor, loss of vehicle use, loss of time, inconvenience or any other
consequential expenses. The warranties herin are in lieu of any other expressed or implied warranties, including any implied warranty of merchant-
ability or fitness, and any other obligation on the part of VDO North America, or selling dealer.
(NOTE: This is a Limited Warranty as defined by the Magnuson-Moss Warranty Act of 1975.)
Siemens VDO http://sso-usa.siemensvdo.com
Tachometer
Installation Instructions
Instruction Sheet #0 515 012 044
Rev. 03/00
INSTRUCTIONS FOR THE INSTALLATION OF THE TACHOMETER ARE CONTAINED
HEREIN. USE IS RESTRICTED TO 12-VOLT NEGATIVE GROUND ELECTRICAL
SYSTEMS. LIGHT BULB, IF SUPPLIED, IS 12 VOLT.
Siemens ® VDO
Tools and Materials Needed For Installation:
16 Gauge stranded, insulated wire
Non-insulated ¼" spade connectors
2
¹⁄₁₆
" hole saw
Drill and drill bit set
Half-round file
Tape measure or ruler
Small tools: wrench or nut driver, utility
knife, pliers, etc.
Tachometer Installation:
To Begin, go to
#
➊
➊
BEGIN HERE
Item Description
Quantity
1
.
Tachometer
(2
¹⁄₁₆
" [52 mm] diameter)
1
2.
Lamp Socket (Push in, wedge-type)
1
3.
Light Bulb (12-volt / G.E. #158 or equivalent)
1
4.
VDO Spin-Lok™ Clamp
1
5.
Installation Instructions
1
Parts List
1. Select the location where you will mount
the gauge, and cut a 2
¹⁄₁₆
" hole as shown
in Diagram A.
2. Slip the VDO Spin-Lok Mounting
Ù
[text continues at #
Ë
]
Tachometer Wiring:
1. Run wires from the tachometer loca-
tion to:
a) A +12 volt power terminal.
(This positive power source
MUST BE SWITCHED, and
should be protected with a fuse);
b) the light switch (also after the
fuse in the fuse box);
c) a good ground location;
Diagram E
Fine tachometer adjustment needed when using a pulse-per-revolution signal
➊
Compare the VDO Tachometer
reading with that of a reference
tachometer.
➋
Adjust the
potentiometer
on the side
of the gauge.
➌
The pointer will move clockwise or
counterclockwise as you adjust.
When the VDO Tachometer reading
matches that of the reference
tachometer, the
adjustment is complete.
The bezel diameter is only a few mil-
limeters larger than the gauge itself.
With that in mind, measure and pre-
cisely mark the gauge location be-
fore cutting any holes!
CAUTION!!!
Clamp over the back of the instrument. Its
direction depends on the thickness of the
panel (Diagram B). Tighten the clamp un-
til the gauge can no longer be rotated by
hand.
DO NOT OVERTIGHTEN.
Diagram D
Tachometer configuration for use with ignition coil (top); alternator (bottom)
Use this table if your ignition
is the type that provides a
pulse-per-revolution type
signal.
4000 RPM Alternator Tach
2:1 ratio set for 6 cyl. gas;
use pot to calibrate.
Use this table if you
are using your tachom-
eter with an ignition
coil.
CAUTION: Read these instructions
thoroughly before making installation.
Do not deviate from assembly or wiring
instructions. Always disconnect battery
ground before making any electrical
connections. If in doubt, please contact
your dealer or VDO Instruments at (
800
)
265-1818
.