Ok so I called Crystler with my Vin. What they were able to tell me is my jeep had a ac unit installed at the dealer about 6 months after it was purchased in Connecticut. Probably right before the original owner brought it to Florida. I don't imagine this being a common wiring harness to find? Here's what I'm thinking my truck has 315k miles on it and is starting to get tired. There is a 1991 Xj on Facebook with 140k miles for $400 with a slipping transmission. I know it won't be easy but I'm thinking about completely getting rid of the hacked up renix system and using the Xj as a donor.