I have no power to the +12 prong on the rv plug in the rear, any ideas ?

 

Try squeezing the brake controller or turning on the parking lights.
Something activates the 12v and turns it on.
Not sure what I did but there was 3 rv mechanics telling me I had a blown fuse on my 2 day old truck. Then all of a sudden it was working. I touched something.

 

It needs to be running.

 

ive tested in running not running. Lights on lights off. Still nothing

 

I believe the trailer needs to be attached for it to tun on, truck needs to detect a trailer.

 

Ya..I meant with a trailer attached

 

Other people have experienced the same problem, some have found the fuse in the wrong location. reference this thread.


https://www.ford-trucks.com/forums/1...-of-truck.html