Oil Pressure Display

The oil pressure switch detects oil pressure for the cluster. The microprocessor converts oil pressure switch signals and activates a 12-segment bar graph which displays oil pressure. The resistance at the sensor is 90 ohms at high oil pressure (80 psi). The resistance at the sensor is zero ohms when there is no oil pressure. When the bar graph changes from 2 to 1 segments, an audible alarm beeps briefly.