Well, traded the 2004 F250 in for a 2013 Ford F150 Lariat. For some reason the trailer brake setting does not recognize a trailer is hooked up. All lights, blinkers, and backing up trailer work just fine. But when I am backing the trailer, the backup camera alerts since the boat is hooked up. Is this normal? I verified that the fuses are good, and there is a relay installed for trailer brakes. Any other reason it would show no trailer disconnected when trying to set the trailer brake option? I would assume that if a trailer was hooked up, the backup camera alert would disable. Any ideas?