Operation CHARM: Car repair manuals for everyone.
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Tachometer: Testing and Inspection

Test for battery voltage:

1. Remove meter and turn ignition switch ON. Refer to Meter Removal and Installation.

Speedometer/Odometer:




Tachometer:




2. Using voltage meter, test voltage between Pin 3 and Pin 4.
3. If battery voltage is OK, replace meter. If not OK, check ignition wiring.