Meters and Gauges

With the ignition switch in the ON or START position power is supplied
^ through 7.5 A fuse [No. (31) located in the fuse block (J/B)]
^ to combination meter terminal (23)
^ for the tachometer
^ for the speedometer, fuel gauge and water temperature gauge.
Ground is supplied
^ to combination meter terminals (27) and (11)
^ through body grounds (M14) and (M68).
The reading on the water temperature gauge is based on the resistance change of the thermal transmitter.
A variable ground is supplied to terminal (5) of the combination meter for the water temperature gauge.
The tachometer is regulated by a signal
^ from terminal (5) of the Engine Control Module (ECM) (ECCS control module)
^ to combination meter terminal (20) for the tachometer.
The fuel gauge is regulated by a variable ground signal supplied
^ to combination meter terminal (10) for the fuel gauge
^ from terminal (5) of the fuel tank gauge unit
^ through terminal (4) of the fuel tank gauge unit and
^ through body grounds (B54) and (B71).
The vehicle speed sensor provides a voltage signal to the combination meter for the speedometer and the voltage is converted into the vehicle speed.
The voltage is supplied
^ to combination meter terminals (16) and (17) for the speedometer
^ from terminals (2) and (1) of the vehicle speed sensor.