[Carl n Susan]

Does the hydraulic system work? If you have the jacks down and the slides out then the first self resetting breaker is probably functioning.

How did you determine the batteries were at 13.1? A volt/ohm meter at the batteries or the display on the Level Up panel? Was there shore power (or the truck connected (it has to be running if you have a Ford) when you measured the 13.1V??

On and Off of the switch in the convenience center is a confusing situation. Are you *SURE* the key can not be removed in its current position??? If you can remove it then the batteries are disconnected from the fuse/converter panel.

If you have hydraulic function and the key can not be removed, then get out your volt/ohm meter and start chasing the 12V system. The positive wire from the battery goes to a self resetting breaker (for the hydraulic pump) then to a second self resetting breaker which feeds the rest of the 12V system. Check for voltage on the input and output sides of all the self resetting breakers.

The wiring from the battery to the 12V fuse panel is pretty straight forward. It is just a matter of finding the fault.