Excuse my newbie-ness here but I had the door panel off the drivers side of the car for repair and noticed a second wiring harness coming from the wires to the power door locks. It was just taped off to the side. Would GM have installed the wiring for power windows with the door lock wires when the car was built? I honestly don't know why somebody got power locks but not windows. Would be nice if I could install the original OEM power windows.

if its a small square plug its for power mirrors, I found them in mine when I went to transfer mine from one car to the other.

before you get google and search trolls. Yes you can have power windows and door locks. I have seen a few J's that have the harness, mine does not. It's not too hard to DIY with a little incentive and diagrams. IMO not worht it more electrical parts,wires and $ spent and to spend on things that will break.