[tentcamper]

I run my fridge off the TV battery. I have a battery switch. When I turn off the the TM battery the only source for fridge power is through 7-pin battery 12V pin from the TV. So when I travel the battery switch is off.

I made one modification. The stock wiring, When the battery switch is off there is no power to the breakaway brake. So I wired the breakaway brake directly to the TM battery. Simple with my TM with the battery on the tongue.

My TV battery is always live at 7-pin I have never had an issue with running my battery down when stopping for lunch. But I do disconnect for long stays.