Oil Pressure Gauge

The Engine Oil Pressure is displayed by the Oil Gauge. The pointer of the gauge is moved by current flow through two Coils and is similar in operation to the Fuel Gauge. The Fuel Pump Oil Pressure Switch and Sender senses Engine Oil Pressure. The Oil Sender has a low resistance (approximately 0 ohms) when Oil Pressure is low (0 psi) and a high resistance (approximately 90 ohms) when Oil Pressure is high (80 psi).