Thanks MnP, for that info for Joe. Joe, I had DRV install my Winegard so I hadn't even checked out the wiring. Ed told me the needed wiring was pre-installed at build so for me or their techs it wouldn't be an issue.
My bigger concern was getting the Winegard up on the roof, they are hefty and bulky making lifting and climbing a ladder rough. I would image at DRV they simply hoisted the unit up to the roof using a pallet with their forklift.
Dan