1999 Superduty 7-pin connecter on bumper

all my trailer lights work except for the running lights but that is in the trailer there is power to the harness on the bumper. my problem is my old trailer brake controller broke and was making my brake lights stay on. I got a new brake controller and a new harness hooked it straight up to the stock wiring harness under the dash and nothing no power from the brake controller I also have no signal coming through the wiring harness for the yellow left blinker wire??? so I wired up the left blinker to the harness to make it work..
I cheked all the fuses under the hood I replaced a 5 amp fuse # 27 I think?


your help is appreciated I need to get on the road and make it to the hotel.

 

well I found the power distribution box diagram and my # 1 fuse was for the blinker prob. and the 2nd from the top center row was for trailer brakes i think 28...

 

Glad you figured it out.
Sometimes the relays are not installed. They usually came in the glovebox along with the brake controller wiring harness I believe.