This is a simple problem. Know what these two labels mean? They mean that
there is a plug on the side of the trailer (in the first picture) and two
wires that run from there to the battery. That's it. This is marketing crap.
No charge controller, no solar panel, no nothing. For $24,000 you get a $3
connector and some wire...and two colorful stickers. Very nice.
Also, there was no sealant around the base of the plug on the outside of the trailer, so rain could go straight into the wall. Fixed that. I installed a non-Zamp solar charging system here.