Arctic fox has a decent prewire. I have installed a few solar panels on Arctic foxes. This is how it goes.
There are two pairs of wires going to the cabinet where the solar ready sticker is. It isn't advertising. It is more a "cut here" type of thing. The controller (regulator) goes there. One pair of wires comes from the roof. (there is a capped plug on the roof to hook to the panel) The other pair goes directly to the battery's. They are usually 8 gauge wire. Recommend adding a 20 amp fuse to the plus side headed for the battery.
Hope this helps.
Good luck and happy trails.
