I have a question about the wiring harness and what I need to purchase. This will be my first TT. I have an Coleman 16QB on order. I will be pulling with 2011 Chevrolet 1500. I have reese hitch and weight distribution hitch but no wiring or breaks wiring on my truck. I was going to buy this seperate because at the dealer its so high. What harness is the best to use for this combination. Thanks for any help!!