Tahoe Z71 - 72 Overlander Umbilical Question
Good Morning All,
I need a little guidance with my umbilical cord. The PO "wired" a "new" umbilical which consisted of wire and duct tape - my thinking was that he didn't think he could purchase a new 7 pin trailer end connector so he made one.
This thing finally fell apart while on a trip, I bought a new truck end connector from Tractor supply and wired it to the old trailer end. My lights have not worked correctly since. I have tried every combination of wiring I could think of, and still I get the following: No Running lights. Left signal works. Right signal and both reverse lights blink at the same time. It's a mess.
I am thinking of making a simple tester with alligator clips and a length of 14 gauge, removing the plug from the trailer to expose the wires then going from each wire on the truck side to each wire on the trailer side, determine the configuration Anyone else do anything like this? Or does anyone have a diagram - 03 Tahoe - 72 Overlander?