Oil Pressure Gage

The Oil Pressure Gage operates the same as the Fuel Gage. The resistance controlling the current flow through the coils (High coil and Low coil) is provided by the Oil Pressure Sender through the TAN (31) wire. With no oil pressure, the resistance of the sender is low (one ohm). At 275 kPa (40 psi), the resistance is high (44 ohms).