I located the brake wire, +12 V, and ground for my brake controller.
I am unable to locate the rear hitch harness blue wire that has 10 AWG (UL) GXL written on it shown on photo hitch-harness2.jpg
In the folder are the photos I took of the hitch harness and the harnesses under the steer wheel and inside the dash board cover.
I did not see the hitch harness blue wire that has 10 AWG (UL) located under the seat.
I did trace the hitch harness blue wire to a wire bundle that entered the left side of the driver above the left side wheel well, but I could not locate where the wire went after that.
If anyone has located where the wire comes out inside the cab could you please let me know and/or show me a photo of it?