Tachometer: Description and Operation

Power Supply And Ground Circuit
Power is supplied at all times
^ through 7.5 A fuse [No. (40), located in the fuse block (J/B)]
^ to combination meter terminal (15).
With the ignition switch in the ON or START position, power is supplied
^ through 10 A fuse [No. (13), located in the fuse block (J/B)]
^ to combination meter terminal (37).
Ground is supplied
^ to combination meter terminal (16).
^ through body grounds (M13), (M73) and (M103).
The tachometer indicates engine speed in revolutions per minute (rpm).
The tachometer is regulated by a signal
^ from terminal (5) of the ECM (ECCS control module)
^ to combination meter terminal (3) for the tachometer.