Hi,
It would help to know the model and type of vehicle.
Normally modern cars do not need a larger alternator or battery. The RV will have it's own battery, and if you are camping in a campground, then it will fully charge while plugged in at the site. You can run the refrigerator on gas, and the battery charge line will only need about 8-15 amps from the tow vehicle alternator.
My work checked around for best prices and recently installed a U-Haul hitch on a work E-250 van. The price for that was reasonable, and it takes them about 1 hour while it is on a lift. I guess they also installed a brake controller and wiring for the lights too.
I had a hitch installed by U-haul back in 1984 and it worked great too.
Lately I have been installing my own. You might price the controller and hitch at a place like
ETrailer.com They advertize with Trailer Life and Motorhome Magazines, sponsors of RV.Net that host this site.
You might also ask for recommendations for brake controller brands. They are not all made alike.
How big will the trailer be?
What is the tow vehicle?
That will help.
Many times the RV sales place also can install a hitch, yet sometimes their price can get high. Some people insist on a "Free" hitch with a new trailer, so the dealership includes the price with the total price paid for the RV.
Fred.
