question about Park/neutral switch wiring
where in the harness does the wires come from for the park/neutral switch on the side of the tranny? Doing a 4L80E swap and somehow I literally lost the wires/plugs that go into the switch...like I can't find them anywhere and I can't find any pictures that show where in the harness they are or where they should be coming from. I've pretty much determined they are not part of the engine harness at all so they must be coming from somewhere else? FYI this was a complete engine/tranny pull out and rebuild so all of the harness was just hanging for a while...thanks folks.
Best way IMO. You can use six of those wires and have reverse lights, nss, and the hatch release all work like that.
I’ll dig in my picture and see if I can find it. I’m at my parents so I can’t go out to the Formula and look for you.
This picture will show you at least some of the puzzle on which wires to use. You have to put it in neutral reverse and park to check continuity but the way I separated them for that picture eliminates some at least.
I did this three years ago so I don’t recall exactly what’s what but it’s a lot better using that later model switch.
thanks for all that info, that's awesome!









