hey @gnarlynick2072, digging up an old thread here, but hoping you can help me with ID'ing my wires.
I have the yellow wire and confirmed that it's receiving 12V with the ignition on. I don't however have the red/black wire. Any ideas what it could be?
I tried measuring continuity on the connectors (body side harness) to find any that had had continuity on the yellow (2 from memory did), but when trying to jump yellow to the other pins that those connectors had continuity on, the reverse lights didn't come on (ignition on). Weird, unless I'm understanding this wrong.