I talked to a person at the place where we looked at a camper and they quoted $750 and told me I was getting a great deal on hitch work including a hitch, sway, 7 way plug, brake controller, receiver, ball, and wiring. They do not do transmission coolers. I went to U Haul today and got a bid of $675 for a class 3 hitch, brake control, transmission cooler, a LED 4 flat powered converter flat end??, wiring, and 4 hours labor. They said they do not do sway control. Is the LED 4 flat like the 7 way plug but less? Should I pay a little more and have the dealer do the hitch then would U Haul do just the trans cooler for about $150? Or is there a way to add sway to the U Haul work? If I want airbags, where do I get that work done? And on minivan rated for 3500 looking at camper 2000-2300 do I need WD? The hitch says it has WD not sure if it's sufficient. We fill our gas tank and check oil, tires, and fluids and take cars in for everything else. Not handy.