remove drivers taillight, reach in and above the wheel well its taped back on the main harness. remove the plug, wire in a converter (atleast i had to for my kick, as it has seperate turn signals) then route 4 flat connector out side of taillight opening and into trunk (can be seen sightly while looking at door gap when door is closed) but allows the wire to be easily acessed you could drill the interior panel for it to run through, or fish it down to where the hitch its and mount it down there
i for one run mine out the taillight, into the trunk, and when i tow it gets hooked up, slack gets put back into trunk and door is shut, keeping it from dragging on the ground.
if you want to test it you can buy a sinple plug in tester from most places that sell hitches. if not, run by somewhere that has a trailer and plug it in.
if you have any more questions about it, pm me, i install converters, hitches, brake controllers everyday for my job. if you want ill grab the wire colour codes tomorrow from work.