Temperature Gauge: 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 water temperature gauge indicates the engine coolant temperature. The reading on the gauge is based on the resistance of the thermal transmitter.
As the temperature of the coolant increases, the resistance of the thermal transmitter decreases. A variable ground is supplied to terminal 6 of the combination meter for the water temperature gauge. The needle on the gauge moves from "C" to "H".