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2650-1244-00
INSTALLATION INSTRUCTIONS
5" Tachometer
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 http://www.autometer.com/tech_faq.aspx
please contact Auto Meter Technical Service at 815-899-0801.
You may also email us at service@autometer.com.
INTRODUCTION
QUESTIONS:
• Any Auto Meter Shift-Lite™, or Quick-Lite™ Shift-Lite can be used with tachs equipped with a black, Shift-Lite connector.
NOTE 1: This tachometer has an air core meter. With power off, it is normal for the pointer to leave zero. When 12V power is applied,
the pointer will move to the correct position.
NOTE 2: Tachometers with two or three buttons use an advanced microcontroller circuit to measure engine RPM for increased accuracy and zero pointer utter
at low RPM. When used on 0.5, 1, or 1.5 pulse per rev ignitions, a brief pause in pointer movement may be observed as RPM is rapidly decreased.
1. WIRING
* See “Warning” below
Tach output on
Electronic ignition
Fuse
(See caution
below)
Switch Closed
when shifter is in
1st or Low
Black
To Shift-Lite
(Optional)
2nd
Green
White
Red
Switch
Customer
Supplied
Momentary
Dash Lighting
1st
Blue
(Only on 2-stage
S.L. Tachs)
Ignition
Good Engine
Ground
or
Switch
12V Battery
As a safety precaution the RED wire of this product should
CAUTION!!!
be fused before connecting it to the positive (+) side of
switched power source. We recommend using a 4 Amp,
3AG fast-acting type cartridge fuse (Littlefuse® #312 004
or an equivalent) inline with the RED wire of our product
for tachs that use a Shift-Lite. For tachs without a ShiftLite we recommend using a 1Amp 3 AG fast-acting type
cartridge fuse (Littlefuse® #312 001 or an equivalent).
*
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.
*
See autometer.com/tech_installation.aspx for specic
vehicle information.
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WARNING
Check with engine builder for maximum
recom mended saf e shift point be fore
setting shift point on tachometer. Failure
to do this could lead to over-revving of
engine, causing serious damage to engine
and car.
IMPORTANT NOTE
This tach has an air core meter movement.
The tach pointer may not always rest at
zero. This is normal. When 12v power
is supplied, pointer will position to the
correct RPM.
Calibration
(Units with
orange &
brown loops)
CLIP NECESSARY
WIRE LOOPS. DO NOT
PUSH WIRES INTO CASE.
8 CYL. — NO adjustment is necessary.
6 CYL. — Clip BROWN wire loop only.
Insulate with electrical tape.
4 CYL. — Clip BROWN and ORANGE
wire loops. Insulate with
electrical tape.
Calibration
CLIP NECESSARY
WIRE LOOPS. DO NOT
PUSH WIRES INTO CASE.
8 CYL. (4 Pulse) — NO adjustment is necessary.
6 CYL. (3 Pulse) — Clip BROWN wire loop only.
Insulate with electrical tape.
4 CYL. (2 Pulse) — Clip BLUE wire loop only.
Insulate with electrical tape.
4 CYL. (1 Pulse) — Clip BROWN and BLUE
wire loops. Insulate with electrical tape.
(Units with blue & brown loops)
* If you are unsure of your
vehicle’s pulse(s) per
revolution or specific
calibration requirements,
contact Auto Meter
Tech Support at (815)
899-0801 or go to http://
hp.autometer.com/
techtips/ techtips.html for
information.
2. CALIBRATION (MODELS WITH NO CALIBRATION LOOPS)
The tachometer is congured at the factory for 4 PPR. To change the PPR on tachs with three buttons, follow the steps below:
1. With no power applied to the tach, press and hold the SET button.
2. Apply power to the tach by turning the ignition key to the “Accessory” or “On” position. Do not start the engine! The pointer will move to a
position on the dial which indicates the default conguration of 4 PPR. Release the SET button.
3. Press and release the (erase) button to increase the PPR setting. Press and release the (recall) button to decrease the PPR setting.
See the tables below to nd the pointer reading that corresponds to the desired PPR for your tachometer type.
4. When the pointer indicates the desired PPR, press and release the SET button to permanently store the settings and exit Conguration mode.
To change the PPR on tachs with two buttons, follow the steps below:
1. With no power applied to the tach, press and hold the yellow RECALL button.
2. Apply power to the tach by turning the ignition key to the “Accessory” or “On” position. Do not start the engine! Release the RECALL button.
The pointer will move to a position on the dial which indicates the default conguration of 4 PPR.
3. Press and release the red ERASE button to change the PPR setting. This will cause the pointer to indicate 5 PPR, then 6 PPR, then down to 0.5 PPR,
then 1, 1.5, 2, 2.5, 3, and back to 4 PPR. See the table below to nd the pointer reading that corresponds to the desired PPR.
4. When the pointer indicates the desired PPR, press and release the yellow RECALL button to permanently
store the settings and exit Conguration mode.
FOR MODELS 6858, 6857, 6856, 3906 AND 6851:
ENGINE Most 2 cyl. Most 4 cyl. Most 6 cyl. Most 8 cyl.
PPR 0.5 1 1.5 2 2.5 3 4 5 6
DIAL RPM 500 1000 1500 2000 2500 3000 4000 5000 6000
FOR MODELS 6809, 6811, 6854, 4499, 6852 and 5795
ENGINE Most 2 cyl. Most 4 cyl. Most 6 cyl. Most 8 cyl.
PPR 0.5 1 1.5 2 2.5 3 4 5 6
DIAL RPM 5000 5500 6000 6500 7000 7500 8000 8500 9000
FOR MODEL 6855:
ENGINE Most 2 cyl. Most 4 cyl. Most 6 cyl. Most 8 cyl.
PPR 0.5 1 1.5 2 2.5 3 4 5 6
DIAL RPM 7000 7500 8000 8500 9000 9500 10000 10500 11000
Mounting
1) Loosen both bolts holding the shock strap to the mounting foot. Back both
bolts out until each is only one or two turns into the spacer.
2) Pass tach wires through shock strap assembly and slide tach casing into
shock strap assembly.
3) For external Shift-Lite models, position Shift-Lite mounting bracket under
shock strap as shown in image. Adjust Shift-Lite
(if applicable), tach, and mounting base to desired positions (see figure 4
for recommended shock strap position), and tighten bolts holding mounting
foot to shock strap to secure the assembly.
4) Make sure rubber section of shock strap seats properly to ensure proper
fitment. Check to make sure shock strap is approximately 1
between center line of strap and step of tachometer casing for best
mounting. For external Shift-Lite models, plug shift light into tachometer
connector. Plug is directional, do not force fit!
5) Recommended placement of external Shift-Lite (if applicable) is at 10
o’clock position. It is possible to place Shift-Lite in other positions in
accordance with driver preference and vehicle mounting requirements.
6) The special design of the tachometer base allows for a variety of mounting
possibilities. Attach the base using screws provided or use a pop rivet tool.
(Shift-Lite model shown)
7
⁄8" (1.875”)
1)
2)
17⁄8"
4)
5)
Note: Installation images shown may be different from your actual model.
3)
6)