I go investigate a bit more. Im really not sure at the moment, and its too dam hot in the uninsulated side of my shop to be looking. But the light harness that plugs into the main harness has the yellow lead going to what I thought was a ground, but its not it goes into the passenger door contact switch for like the dome light, maybe the trunk light. ect. Not shocking it goes from a small wire to a larger one. Ive alot of pics from the last car I parted I bet they can tell me.