2650-972A
1
1
1
2 2 2
UP
UP
UP UP
DN
DN
4 CYL / 2 PULSE
6 CYL / 3 PULSE
8 CYL / 4 PULSE
INSTALLATION INSTRUCTIONS
1
2
⁄
" DIA. ELECTRIC TACHOMETER
®
16
If after completely reading these instructions you have questions regarding the operation or installation of your instrument(s),
Additional information can also be found at
IMPORTANT
This tachometer is factory calibrated to operate on 8 cylinder engines.
For 4 or 6 cylinder engines, it is necessary to make the proper
adjustments to adapt this tachometer to your cylinder range.
please contact Auto Meter Technical Service at
You may also email us at service@autometer.com.
http://www.autometer.com/tech_faq.aspx
Calibration
To change the calibration of the tachometer, remove the twist in light
socket assembly to access the cylinder select switches. The switches
are located to the left of the light hole. Use a small screwdriver or an
unwound paper clip to change the switch settings.
Unwound
Paper Clip
QUESTIONS:
815-899-0801.
NOTE
This tachometer has an air core meter. The
tach pointer may not always rest at zero. This
is normal. When engine is started, pointer will
position on the correct RPM.
Switch
4 CYL. - Switch One up, Switch Two down.
6 CYL. - Switch One down, Switch Two up.
8 CYL. - Both switches up.
Mounting
1. Can be mounted in a 2
(Take care that hole is not cut too large.) Can also be
mounted in a standard aftermarket street rod panel.
3
⁄
2. Cut a
3. Connect the tachometer wires as shown below.
4. Secure the tachometer in the dashboard using the
” dia. hole in the firewall where the tachometer
8
wires will be routed. Place rubber grommet in hole
and route the connector wires through to the engine
compartment.
bracket, thumbnuts and lockwashers provided.
1
⁄
” dia. hole in the dashboard.
16
2.2”
9
1
⁄
”
16
Wiring
COIL
12V BATTERY
White light wire connects to dash lighting circuit or +12 volts.
Black light wire connects to Ground, battery neg(-).
Replacement bulb (#161) available at local auto parts store.
FUSE
(See caution
RED
BLACK
GREEN
below)
GROMMET
IN FIREWALL
CAUTION!
As a safety precaution, the +12V terminal of this product
should be fused before connecting to the 12V ignition
switch. We recommend using a 1 Amp, 3AG fast-acting
type cartridge fuse (Littlefuse
®
# 312 001 or an equivalent).
RED
BLACK
GREEN
12V IGNITION SWITCH (+)
GOOD ENGINE
GROUND
OR
+
-
EARLY
MODEL IGNITION
GREEN
ELECTRONIC
IGNITION
WARNING
Warranty will be void if connected to coil
when using an aftermarket ignition box
such as, but not limited to products from
the following manufacturers: MSD, Crane,
Jacobs, Mallory, Holley, Etc.. Prior to
installation of your tachometer, check
with the ignition box manufacturer for
recommended tachometer signal location.
Tach Terminal
For service send your product to Auto Meter in a well packed shipping carton. Please include a note explaining what the problem is along with your phone number. Please specify when you
need the product back. If you need it back immediately mark the outside of the box “RUSH REPAIR,” and Auto Meter will service product within two days after receiving it. ($10.00 charge will be
added to the cost of “RUSH REPAIR.”) If you are sending product back for Warranty adjustment, you must include a copy (or original) of your sales receipt from the place of purchase.
12 MONTH LIMITED WARRANTY
Auto Meter Products, Inc. warrants to the consumer that all Auto Meter High Performance products will be free from defects in material and workmanship for a period of twelve (12) months from date of the
original purchase. Products that fail within this 12 month warranty period will be repaired or replaced at Auto Meter’s option to the consumer, when it is determined by Auto Meter Products, Inc. that the product
failed due to defects in material or workmanship. This warranty is limited to the repair or replacement of parts in the Auto Meter instruments. In no event shall this warranty exceed the original purchase price of
the Auto Meter instruments nor shall Auto Meter Products, Inc. be responsible for special, incidental or consequential damages or costs incurred due to the failure of this product. Warranty claims to Auto Meter
must be transportation prepaid and accompanied with dated proof of purchase. This warranty applies only to the original purchaser of product and is non-transferable. All implied warranties shall be limited in
duration to the said 12 month warranty period. Breaking the instrument seal, improper use or installation, accident, water damage, abuse, unauthorized repairs or alterations voids this warranty. Auto Meter
Products, Inc. disclaims any liability for consequential damages due to breach of any written or implied warranty on all products manufactured by Auto Meter.
FOR SERVICE SEND TO: AUTO METER PRODUCTS, INC. 413 W. Elm St., Sycamore, IL 60178 USA (815) 899-0801
Email us at service@autometer.com
SERVICE
© 2005 Auto Meter Products, Inc.
2650-972A 9/12/05
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