profdant139
My father owns the same model Funfinder 139. I believe that the wires coming from the batteries on the tongue are accessible in the storage compartments beneath your dining seats. I can't remember which seat, I think the passenger side one? You could tap into the 12V power wires there which should be the larger gauge main 12V power supply wires and you will also be located much closer to the battery from this spot. Hook your inverter to 12V at this location, this will utilize the larger gauge wire with a shorter wire length between battery and inverter. You'll have to get creative with how you hook up the inverter because you'll want to be able to conveniently access it to turn it on/off.
