Just bought my first RV a week ago. No idea what I am doing!

Thanks. That helps now that I know how it is supposed to work. It must have been put there just to be able to turn on the lights before entering the cabin.

The deep cell battery is in my basement charging. The lights in the RV work and I assume from the converter alone. I am not sure how to hook the battery up (It was unhooked when I got it). Not sure what cables go to what side.