Our Transit was ordered with the tow package and brake controller. We have the extended mirrors and tow/haul. Set up for towing a large RV. Well the RV sits and hasn't been towed by this vehicle. Borrowed a friend's trailer to move a large mower a couple of weeks ago. No trailer lights. Was in for 52,500 mile service yesterday at the dealer and asked that the system be checked. Obviously out of warranty so charged $135. Sounded reasonable. Didn't hear from them by late afternoon so I called. Has the service been performed? No, working on the tow system electrical. Obviously, not getting it back that day. Called today at noon. Have to have master electrical technician check it they say. Has the service been performed? Yes. Fine, I'll be right over. I know - dealership. I've been going there with various Fords for thirty years (two Aerostars and four F250s) except for five years with the Sprinter experiment. Come back and we'll schedule the master electrician they said. The service tech had already spent five hours. Can't imagine how that went. Anyhow I have a vehicle set up for towing but the trailer lights don't work. Any ideas?