Do you have any details on the awning set-up you were telling me about earlier this year? I'm ruminating an awning build for the BaseCamper and I think your idea will work for us.
I got my electrical system started. I cut off my spare tire carrier and welded expanded steel on the tongue. I used this water proof tool box for my battery and wired in a 7 pin plug to charge it from the truck. I used a length on 10 gauge solid copper to tie the battery ground to the trailer frame.
Inside I put this Blue Sea Fuse panel. I used 10 gauge house wire to tie it to the battery.
A little celebrity add on. My buddies James and Beth gave me this fan that was previously installed on the CrowsWing Tear drop. It worked perfect in my CT, very generous, I couldn't be happier. It is wired to the fuse panel with red/black 12 gauge speaker wire.