Well I finally got a chance to go to the "yard" yesterday, and found a perfect donor vehicle. It was a 93 Chevy p/u that someone had already added the inline trailer wire adaptor to. It will be perfect! No extra wires except a back-up light wire, and I am going to utilize that as well. For anyone needing a tail light harness, this year truck (93) works out well, as it does not have multiple wires going to multiple bulbs.....just three wires, like our old rigs have. (well 4 including the back-up light)......easy to wire up!