I have a 2020 heartland bighorn 3870fb. My fridge went out and i installed a resedntial. There are 2 wires in the battery storage compartment that are zip tied up after coming through the 2all and not hooked to anything. Could thise be running back to the fridge outlet? Is that where a power invertor can be hooked up to go from 12v to 110 to that outlet.