No Power

rlw999 wrote:

Mike P. wrote:

According to the Ford book that came with the unit new, I'm not sure what fuse it is that I should look for?
Mike

If you're not sure which fuse to check, you could just check them all. It's pretty fast and easy with a 12V test light (looks kind of like a screwdriver with a pointy tip, a light in the handle, and a ground wire with a clamp). The fuses have a pair of holes on top where the contacts are exposed, just poke the test light into each side of the fuse, if it has power on one side but not the other, you know it's blown.

I know it was meant to be helpful, but..

There is at least 100 fuses spread out over 4-5 different fuse/relay boxes which may be under the drivers side dash, under the passenger side of dash and both sides of the engine bay..

Add in the fact that the OP is dealing with a "E450 Van chassis" RV fuse boxes often get moved or rearranged by the RV manufacturer..

Finding and testing every single one of those fuses without a game plan will result in a lot of frustration..

Especially considering there ARE "charts" that give locations and function of fuses..

Additionally, most fuses use in modern automobile applications are the even smaller ATM (MINI) plastic fuses which will make even more challenging to nail with meter leads..

ATC vs ATM FUSES

Since OP doesn't have ANY stop/turn/tail/break, charge power they might wish to look at the wiring right at the socket on the RV and trace back to the wiring harness.. I find it interesting that ALL have "failed" so there is a chance that the socket is not even connected to the wiring harness or if it is connected it was a botched job and the wires corroded off..

There is no one "master fuse" for all towing connections that I am aware of, there should be separate fuses and relays for stop/turn/tail/brake..