Hi,
OK this will sound daft but here goes:

When I switch the 12 volt power switch the red.light comes.on. If the adjacent switch is in the same position is that sourcing power from the leisure battery or car.battery?
Essentially I don't understand which way the switch goes for.each.battery

I've ...

I have reserved a bongo with Jal in Worcester (though I live in Cornwall ). Phil recommends having an external water supply and I'm wondering what you guys thunk of that? Not sure about the gas supply - but the 47 inch bed with side conversion does not leave room for a gas bottle?