Oil Pressure Gauge

Turn ignition switch on (DO NOT  start engine). Wait 1-2 minutes and unplug sender wire. Connect a 14 volt, 1.4 watt bulb between connector terminal and ground. Bulb should light and gauge should read about 60 psi (4.2 kg/cm² ). If gauges do not have psi marks, needle should point at second of 2 center marks.