The power wires that go to the battery are for trailer brakes and auxiliary power for a seven pin plug. The brake lights and signals are taken from the tee connector. I got my hitch and wire harness from the dealer. There were two options, 4 pin or 7. The 4 pin only goes to the tail lights while the 7 goes to the front. 2 of the wires go to the battery and the third goes to the brake controller.
2010 KK Sport, Detoures Knucklebone & backbone, smittybilt XRC 10, rigid led lights, R/L sliders & rack, cb, EMT2, R/K 15x7, OME, JBA, mopar skids & hitch, headlight covers, 4.10's and TruTracs