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3 Wire Oil Pressure Switch Wiring Diagram

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Diagram autometer electric oil pressure gauge wiring diagram full version hd quality wiring diagram toyotadiagrams andreapendibene it. See label for current wiring inside cover. Anyways the 3 wires are orange tan and grey.

The round vdo style pressure sensor to the right (forward) with the red terminal is what i removed to fit a standard pressure switch.


Just put a one wire sender inthe hole that is the proper ohm value for your gauge, then hot wire the relay or by pass the relay all together and wire your fuel pump to come on with the key or a toggle switch. Disconnect the ground cable from the battery. The cut in pressure is 3 5 bar and the cut off pressure is 5 bar.

3 wire oil pressure switch wiring pigtail for gm 12085499 pt121.


Disconnect the ground cable from the battery. 87/88 schematic looks like tan/white and orange is switch same as pump relay, a tan for the oil gage (middle pin?), and the block is ground click to expand. Uses the same delphi/packard connector, terminals, and seals as the factory wiring harness;

Anyways the 3 wires are orange tan and grey.


Angelo on october 3, 2021. I have got wiring diagrams but none tell me the locatons of the wires on the harness plug.what i have is a,b and c.i need to know the locations of these on the plug harness as your are looking at it unpluged.if anyone has the factory gm manuals with this plug in it,it will show. Its a 3 wire the ground is block as well.

When all other connections have been established, take the black wire from the oil pressure gauge and connect it to the black wire on the pressure sensor.


Made with high temperature, cross linked polyethylene txl wire in the correct wire gauge; (try the orange wire of the oil switch to the yellow wire of the relay) it appears that the oil pressure switch is a single pole double throw switch that supplies power supplies power from the starter during cranking through its red wire, and then through the ignition switch on its white wire once the engine starts. Well i dont even think the starter solenoid terminal has a wire to the switch on it, and when it died in the water all of a sudden, the two wires i took off.

Angelo on november 18, 2021.


See label for current wiring inside cover. Great for replacing an old or damaged oil pressure sender wiring harness; If the oil pressure fails the switch will stop the.

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