Oil Pressure Gauge

The oil pressure gauge receives battery voltage through circuit 1035 when the ignition switch is in the following positions:
^ RUN
^ BULB TEST
^ START

The oil pressure gauge is controlled by the engine oil pressure sensor. The resistance of the engine oil pressure sensor varies with the engine oil pressure. The voltage drop across the oil pressure gauge varies due to the changing resistance in the gauge ground circuit. The oil pressure gauge reading changes with the voltage drop.