I have a 2001 Blazer I purchased used. It had a hitch and a four prong plug already. I today purchased a 14' popup camper and I need to wire in a brake controller. I've been searching threads, and I think I can find the rest of the 7 wires at the rear crossmember, but does anyone have a pic of the other end under the dash? Thanks all.

Brian

 

I cant really help you but i dont see a need for a brake controller. Does the popup have electric brakes? My 21' boat doesnt even have electric brakes

 

Yes it has. It is quite a large tent trailer and weighs almost 3000 lbs.