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Auto Meter 2893 User Manual

Dia. electric tachometer, Wiring, Calibration

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FOR SERVICE SEND TO: 

AUTO METER PRODUCTS, INC. 413 W. Elm St., Sycamore, IL 60178 USA (815) 899-0801

Email us at [email protected]

2650-595A        9/12/05

INSTALLATION INSTRUCTIONS

2

5

/

8

" DIA. ELECTRIC TAChOMETER

®

2650-595A

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.

SERVICE

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.

CAUTION!!!

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).

Wiring

1

1

1

2

2

2

UP

UP

UP

UP

DN

DN

4 CYL / 2 PULSE

6 CYL / 3 PULSE

8 CYL / 4 PULSE

Calibration

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

Switch

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.

To change the calibration of the tachometer, remove the flat head screw at the rear of the cup. 
Carefully slide the cup back along the wires to expose the inner case. Remove the snap 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.

WHITE

RED

BLACK

GREEN

FUSE

GROMMET

IN FIREWALL

12V DASH LIGHTING

12V IGNITION 
SWITCH (+)

GOOD 

ENGINE 

GROUND

OR

GREEN

Tach 

Terminal

ELECTRONIC 

IGNITION

EARLY MODEL

IGNITIONS

Unwound 

Paper Clip

(See caution 

below)

BLACK

GREEN

© 2005 Auto Meter Products, Inc.

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.

QUESTIONS

:

If after completely reading these instructions you have questions regarding the operation or installation of your instrument(s), 

please contact Auto Meter Technical Service at 

815-899-0801.

You may also email us at 

[email protected].

Additional information can also be found at 

http://www.autometer.com/tech_faq.aspx

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.

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