No 12 volt charge power at 7 way plug.

[Wharfcat]

I've got a 2019 Ford F-350. So I decided to cut the Lance propriety plug off the camper and wire up a bargman. I had a cord I bought from Torqelift many years ago, just in case I bought a new truck. The Torqelift cord was wired incorrectly, which is another story. All the lights work correctly but I have no power to the 12 volt charge line, Running or stopped. Looked at the fuse box and in the #27 slot there is a 30A fuse so I'm thinking I'll go talk to the Ford dealer tomorrow unless someone already knows the answer.

[deltabravo]

It's common for the factory to leave the fuse out.

If the fuse diagram says slot 27 is where the fuse goes for the 7 pin plug, put a fuse in. That's what I'd do instead of going to the dealer and have them give me a "deer in the headlights" look when I ask them about it.

On earlier GM trucks, the wire wasn't even hooked up to the power stud.

[time2roll]

On my old F150 I needed a fuse and two relays IIRC. Came in a bag in the glove box for self install. Maybe Ford is actually installing these now? Owner's manual should call it out.

link above is very interesting too.

[work2much]

This could be your issue.