Mystery wire (oil pressure sensor harness) (1 Viewer)

[FJsnoozer]

Pinhead, mark, Coolerman, Anyone?

I had two rogue wires , one which I have now identified as the oil pressure sensor wire with the factory connector YB or Yellow/Black.
The wire coming out of the same harness is Solid red (R) and attaches to nothing currently. A previous owner has twisted a WB White Black wire with a large C shaped Ground connector. This leads me to believe it was for some type of ground. Is it the ground for the oil pressure? My sensor is showing oil pressure at 2/3 on the gauge now that I hooked up the YB wire.

 

[Pighead]

What year vehicle?

 

[1MAC]

Taking a stab in the dark- the brake pressure switch comes off the harness very close to the oil sender. It’s a red wire that plugs in to the brake master cylinder, at least on a 77 and probably a few years before and after.

 

[FJsnoozer]

Taking a stab in the dark- the brake pressure switch comes off the harness very close to the oil sender. It’s a red wire that plugs in to the brake master cylinder, at least on a 77 and probably a few years before and after.

This is a 77, sorry I thought it was in my signature.

I didn’t even know there was a wire on the Master Cylinder but I will go check now. I’ll look up what the brake pressure switch does, because clearly it hasn’t been connnected

I’m guessing it triggers the warning light on the dash which I don’t have but am thinking of buying…