Oilspot,
John Irwin, who used to have a TM site on his website, installed solar panels on his TM trailer. Unfortunately, he's now towing another brand of trailer and removed all of the TM hints and tips from his website. Perhaps, you might mail John directly and ask him to share his info with you. Also, "Hal" (Swanson), who may still be one of the national officers of "TrailBlazers," may have information about solar panel installations on TMs.
