08 Alumscape 5th wheel. Are the batteries hooked up as 24 volt or 12 volt? My problem is:new batteries hooked up as 12 volt, only thing running off of batteries are my electric jacks, no lights etc. if I switch it over for 24 volt what will happen if it is fact a 12 volt system and there is another problem somewhere in the system? Fire, smoke, blown fuses or nothing?