Tachometer: Description and Operation

POWER SUPPLY AND GROUND CIRCUIT
Power is supplied at all times
- through 7.5 A fuse [No. 24, located in the fuse block (J/B)]
- to combination meter terminal 3.
With the ignition switch in the ON or START position, power is supplied
- through 10 A fuse [No. 8, located in the fuse block (J/B)]
- to combination meter terminal 12.
Ground is supplied
- to combination meter terminal 2
- through body grounds M4 and M77.

The tachometer indicates engine speed in revolutions per minute (rpm).
The tachometer is regulated by a signal
- from terminal 3 of the ECM (ECCS control module)
- to combination meter terminal 15 for the tachometer.