Longacre AccuTech Tach Installation and Operation Manuel d'utilisateur télécharger pdf

Memory Tach

For standard and electronic ignition systems, 12 volt,

negative ground, 4, 6, or 8 cylinder, 4 cycle. NOT for

magneto or Accel BEI or Laser ignition systems.

White wire -

Power for gauge back lites

Connect to ignition switch

so they shut off

with motor.

Red wire -

Power to run tach.

Commonly connected to

ignition switch so tach

shuts off with motor.

Green wire -

Signal wire.

Connect to ignition system.

• Electronic ignition box - connect

to “Tach” terminal on the box

• Other electronic and point sys-

tems connect to Negative (-) side

of coil (NOT big coil wire!).

MSD™ ignition? - see warning

below

Black wire -

Ground. Connect to engine

or frame. Very important.

Many tach problems trace

back to an improper ground

connection.

Misc. Notes:

• Be sure all electrical connection are tight. Clean the surface for

ground connection. Use insulated connectors or soldered.

• Mount tach where it will not receive excess vibration or heat.

• If wires go thru the firewall use a grommet to prevent chafing

and shorts. Keep wires away from exhause heat.

• Tach is water resistant but NOT waterproof. If you wash the car

out cover the tach to keep it dry.

To Operate Tach

Push “Reset” before going out the first time:

(Black button) This erases the previous memory.

After a run push “Recall” to see highest RPM:

(RED button) The ignition switch must be ON to

recall. However you can shut off the ignition, turn it

back on, and still retain the reading. Push “Reset”

before going back out

MSD

™

Warning

DO NOT connect tach to an MSD™

coil. Unrepairable damage may occur

and will void Warranty.

Connect to “Tach” terminal on box.

NEVER NEVER

connect any wires from the tach to any

spark plug wire or coil secondary wire!

The tach may be damaged beyond repair

and Warranty will be voided.

Change to 4 or 6 cyl use:

This is done from the front unlike

other tachs. Turn on ignition to

power tach. Press and HOLD

BOTH Reset & Recall buttons.

Pointer will jump to 10,000 RPM,

then drop to 0 (continue to hold

both for 10 seconds). Pointer will

go up to 8000 RPM, indicating 8

cyl. (you can now release both

buttons). Push Recall to change.

6000 = 6 cyl., 4000 = 4 cyl. When

you get the setting you want push

Reset to save setting. Tach will

return to normal function.

7/07

Longacre Racing Products

Monroe, Wa. 360 453 2030

(back of tach)

To Operate Tach 1

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Page 1 - To Operate Tach

Memory TachFor standard and electronic ignition systems, 12 volt,negative ground, 4, 6, or 8 cylinder, 4 cycle. NOT formagneto or Accel BEI or Laser i

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Longacre AccuTech Tach Installation and Operation Manuel d'utilisateur

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