So I've found the other end of the wire, and it's been cut 6" from the chassis battery, not the house batteries. I don't understand why it's been routed to the chassis battery, but I plan to correct that by tapping into a wire for the house lighting. There is no clean way for me to fish a new power wire to the panel, because they are on separate sides of the rv, but I don't imagine the fridge has much of a draw when running, and I've changed all the light bulbs to LED's. Once again, thanks for the help. It's all part of the fun of owning a 27 year old rv!