Here's another wrtite up that explains things
http://www.jeepkj.com/forum/showthread. ... tite+hitchIf you have the factory installed trailer package then there will 12 volts at the 7 pin plug and a wire labled "brake" by the driver's left kick panel. There's no plug ready for a brake controler though

You'll need to run plus and minus 12 volts and hook into the stop light switch
If you have the dealer installed unit it's a toss up what the tech installed when he did it. If you have an EVIC then our good.
See the above link and read it all
