I don't know whether to be happy or mad. My truck didn't charge the battery like I thought it would. The camper guy said I need a relay and 30 amp fuse in the fuse box. Went to Napa and they didn't stock them. Went to the Ford dealer and he said if I had the trailer brake kit that came with the truck they should be in there. I had been carrying the relay and fuse around with me in the back door pocket. At least he told me instead of selling me another $30 relay.