Meters and Gauges

With the ignition switch in the ON or START position, power is supplied
^ through 1O A fuse (No. (13) located in the fuse block in the HEC)
^ to combination meter terminal (41)
^ for the tachometer, speedometer and
^ for the fuel gauge and water temperature gauge.
Ground is supplied
^ to combination meter terminals (10) and (38)
^ through body grounds (M13) and (M73).
The reading on the water temperature gauge is based on the resistance change of the thermal transmitter.
A variable ground is supplied to terminal (37) of the combination meter for the water temperature gauge.
The tachometer is regulated by a signal
^ from terminal (5) of the ECM (ECCS control module)
^ to combination meter terminal (17) for the tachometer. The fuel gauge is regulated by a variable ground signal supplied
^ to combination meter terminal (13) for the fuel gauge
^ from terminal (3) of the fuel tank gauge unit
^ through terminal (2) of the fuel tank gauge unit and
^ through body grounds (B16) and (B19).
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 (11) and (28) for the speedometer
^ from terminals (1) and (2) of the vehicle speed sensor.