Originally Posted by Gidor
So when I connected my truck to the trailer the tongue jack should have started working off the truck power right? It did not budge when I connected the 7 pin to my F-150 and my truck identified the trailer. This is weird.
There is a fuse in the trailer's tongue jack power supply line. If the jack is over extended (in either direction) it blows the fuse. This is the usual problem.
Also, I've read on this forum that some vehicles have a fuse in the circuit that supplies 12v power to the vehicle's 7-pin connector. Some members say that their fuse was not installed from the factory.
IMO, those fuses would be the first things to check.
Sherm & Terry w/rescues Steve (std Poodle) & Eydie (min Schnauzer)
2015 Jay Flight 27RLS (Camped: 102 nights 2015, 90 nights 2016)
2006 Ford F350 6.0 PSD, Lariat, 4WD, CC, LB, SRW, auto., Camper pkg.