help to I.D. Oil sensor wire

[DaveMarcotte]

Well very excited to get my newly rebuilt engine in. New water pump today from autoricambi was obviously of better quality then the one I got from the other guys but to be fair it is an upgrade with lifetime warranty.
She started right away using my new started and Mark's distributorless. Oil pressure gave me a scare but the gauge kicked in after about 10 seconds. Here's the thing, the oil light stays on. I'm thinking I had the wrong wire plugged into it. The wire(s) I used has 2 wires going to one female connector. To make matter worse, in my attempt to remove the sensor to test, I broke it! New one on the way. Any help to ID the wire (s) is much appreciated.
Thinking of investing in FedEx! Be to my place 3 times in last 2 weeks.

[Dawgme85]

According to the 1977 wiring diagram, the oil pressure sending unit wire should be gray/black, and the low pressure light wire should be gray/yellow.

LeRoy

[DaveMarcotte]

According to the 1977 wiring diagram, the oil pressure sending unit wire should be gray/black, and the low pressure light wire should be gray/yellow.

LeRoy

Thanks for that LeRoy.
I've got a blk/Yellow or blk/red available. Must be the blk/yellow. Any idea what the two wires (a gray/red wire and a pink wire) go into a single female connect is/was for?

[vandor]

You can test which wire is which by touching them to ground whle someone else looks at the gauge and tells you if the needle moves or the light comes on.

> Any idea what the two wires (a gray/red wire and a pink wire) go into a single female connect is/was for?

Possibly for the electric fuel pump relay circuit.