No Power

Mike P. wrote:

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

It took me just a couple minutes to check all of the fuses in the inside fuse box on my E450 (there are only two fuse boxes in my chassis - one in the engine bay and one in the passenger compartment) when I was trying to find the fuse used for the backup camera display that the previous owner hardwired in).

It takes like a second to touch each side with the probe so even though there are 43 fuses in that box, it doesn't take long to check them all. Less time than it would take me to look up the fuse chart online.

Maybe you misunderstand the tool I was describing, it's not a meter with 2 leads, it's a screwdriver like probe -- clip the ground wire to something metal, then just stick the sharp probe end into the hole on top of the fuse (even mini-ATC fuses have that hole) and see if the light comes on. No need to stare at the meter display and wait for it to register voltage for each one, the light either comes on or it doesn't so you get instance confirmation and can go on to the next one.

In my case it turned out to not be a fuse at all but a bad splice to the radio harness where he tapped off the power.