I have a 09 ford f150 with a integrated brake controller. I have a camper I am hookin up and have no clips,brake lights, turn signals, nothin. I have hooked the trailer to another vehicle and the trailer lights work. The display that I read shows 'trailer disconnected' the brake controller ahold light up when connected and does not. Have inspected all fuses under the hood and in the cab and find none bad. Any ideas???

 

Physically checked/probed at the 4 and 7 pin adapters?

Might look at the BJB box for the relays. The relay coil feed for the relay/s is supplied from the SJB (Smart Juction Box) processor. If you remove 'say' the trailer tow right turn relay, 2 of the connector there will have 12v power. 1 will be 'hot all the time' and the other will flash with the right turn selected, or should. Same with the left. Park relay will have 1 'hot all the time' and 1 'switched' with the H/L switch..

 

Use a 12 volt stick-tester to check your wiring and plug for continuity as the first step in any electrical repair. Next check behind the trailer lights, and then behind each marker light to see if the hot leads to any of them might be crushed between the light housing and the trailer frame from improper installation.