Auto Meter 5780 User Manual

12

INSTALLATION INSTRUCTIONS

TACHOMETER

2650-1139-00 Rev. A

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

QUESTIONS:

please contact Auto Meter Technical Service at 815-899-0801.

You may also email us at [e-mail].

Calibration

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.

NOTE: Calibration changes do not apply to the Jr. Dragster
tachometer. The Jr. Dragster tachometer is calibrated
to operate only on Briggs & Stratton engines.

To change the tachometer calibration, access to the inner case
is necessary. Remove the two acorn nuts as shown in figure A
and carefully slide the cup of the tachometer back in order to
access the inner case. Locate the switch access hole on the
inner case. Use a small screwdriver or an unwound paper clip to
change the switch settings. Move each of the two switches to the
proper cylinder selection according to the diagram illustrated on
the right.

NOTE: This tachometer has an air core meter. With power off,
It is normal for the pointer to leave zero. When power
is applied, the pointer will move to the correct position.

Figure B.

4 CYL. - 2 Pulse, Switch One up, Switch Two down
6 CYL. - 3 Pulse, Switch One down, Switch Two up
8 CYL. - 4 Pulse, Both switches up

Figure A

Acorn

Nuts

Figure B

Figure C

4 CYL. / 2 PULSE

112

UP DN

(Angle view through access hole)

6 CYL. / 3 PULSE 8 CYL. / 4 PULSE

2

DN UP UP UP

Gently pry off black
access cover. Access
switch through light
access hole.

Twist In light socket.
(Under black
access cover)

If you are unsure of your vehicle’s pulse(s) per revolution
or specific calibration requirements, contact Auto Meter
Technical Service Dept. at [phone], or go to
www.autometer.com/hp/tectips for information.

Switch is not visible
from from this angle,
shown for location
only.

Mounting

The special design of the tachometer base allows for a variety of mounting possibili­ties. Loosening the hex screws at the mounting base allows the tachometer to be
rotated in the strap. Also, this design allows the tachometer face to be angled forward
or backward for better viewing. Attach the base using screws provided or some other
fasteners.

Light Replacement

See figure C. Gently pry off black plastic access cover to access the twist-in light socket.
Rotate twist-lock socket counterclockwise using needle nose pliers and remove. Replace
old bulb with GE 194 bulb.

33/8" SIZE

SHOWN

Wiring

White

Fuse

Red

12V Dash
Lighting

12V Ignition
Switch

GROUND NOTE: We highly recommend engine ground for
grounding your instrument. Dashboard, firewall, frame, body
and even battery grounds can affect the performance of
your instrument.

Black

Good Engine

Ground

Red

Black

Green

White

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.

Jr. Dragster Wiring

BLACK

GREEN

Ignition Coil

This tachometer is made to operate on Briggs & Stratton engines only.

WHITE

Fuse

RED

(See caution below)

Engine

Ground

Spark Wire

Green

As a safety precaution, the +12 V terminal of this product should be fused
before connecting it to the 12V ignition switch. We recommend using a
1 Amp, 3 AG fast-acting type cartridge fuse (Littlefuse® #312 001 or an
equivalent).

Lighting Switch

Power Switch

-

Good

Primary (Kill Switch)
Terminal

12V

BATTERY

Grommet

in Firewall

+

Black

OR

* See Warning Below

Early Model

Ignitions

Green

Electronic Ignition

Tach

Te rminal

CAUTION!

WARNING : No wire on this tach should be connected to

the ignition secondary (Spark wire) at any time. This will cause
damage to the product.

CAUTION!

As a safety precaution the Red wire of this product should be
fused before connecting it to the positive (+) side of the 12V DC
battery. We recommend using a 1 Amp, 3AG fast-acting type
cartridge fuse (Littlefuse® # 312 001 or an equivalent) inline
with the Red wire of our product.

Wire Connections
White - Connect to 12 volt source for dial lamp operation.

Red - Connect to 12 volt positive.
Black - Must be common grounded with both battery

and engine.
Green - Trigger lead, connect to the primary spade
terminal on the ignition coil. If a kill switch
is already connected there, you may connect to
the high (hot) side of the kill switch.

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. 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.

Auto Meter Products, Inc. warrants to the consumer that this product will be free from defects in material and workmanship for a period of twelve (12) months from date of the original purchase. Products
that fall 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 transpotation 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.

12 MONTH LIMITED WARRANTY

FOR SERVICE SEND TO: AUTO METER PRODUCTS, INC. 413 W. Elm St., Sycamore, IL 60178 [phone]

For Email: [e-mail]

SERVICE

The “Super Bezel” is a registered trademark of Auto Meter Products, Inc.

© 2011 Auto Meter Products. Inc. 2650-1139-00 Rev. A 09/14/11