Here they are mounted onto the front of the camper. They are 12v batteries hooked up in parallel. I connected the wires going back to the camper from the "+" and "-" on the inside where the two batteries meet.
It was a tight for the battery boxes. I ended up having to use a dremel tool to cut the handles off and trim the cable cover on the side. With both of those things done it just fit.
On a side note. Can somebody tell me what the liquid is all about on top of the battery boxes? I thought I was boiling the batteries but I opened the one on the left and it was bone dry on the inside. Errr, it was cold outside and I had hooked up shore power to charge the batteries an hour or so before. Maybe steam condensate? It kinda has me worried. And why only form on the outside holes. Hmmmmm....