I have a 2018 Bounder 36y ,it has a resident refer I was told that 2 of the 6v batteries would run the refer through the inverter and 2 would run the house ,now I need to replace 3 of the batteries I ...
So one of yours is sitting in there the opposite direction. That's no big deal. They are wired as one bank. The positive from each set is hooked together and the negative from each set is hooked together. Just put the new ones back exactly like the old ones are.