Fuse #

[Mongoose6205]

what is the fuse # for trailer plug 12v charging prong on truck 2023 1500 Laramie 5.7 W/e torque ,7 pin plug mine has no voltage now it did.

 

[2003F350]

I may be mistaken on this, but I THINK that pin only shows voltage under certain conditions, one of them being a trailer plugged into it. I don't recall the other conditions, but IIRC it is to avoid 1) the plug shorting if filled with water and 2) discharging the truck's batteries if the trailer is drawing too much power.