Today, I was looking in my glove box of my '12 XLT and found two wiring harnesses that were in plastic bags but they don't have any part numbers. My truck has the towing package from the factory but I do not have a trailer brake controler. This truck has more bells and whistles than my old 05 XLT.
Anyone know what they could be?

 

I would check the owners manual. if short may be adapters, i long wiring may be it was never installed. don't know. take them to the local dealer and ask them??