Resolution to previous post 're fuses not working

Do you have two kill switches
My only kill switch is for the house/RV batteries
Not the chassis/engine batteries

Rewiring means that stuff is never accidentally left on to run down any battery

If those are items that would normally be on the engine/ignition systems
The p.o. Probably had dead batteries one too many times
Rewired to the house system, so as to save the engine batteries