We used the Meguiar's Marine/RV Fiberglass restore system and it worked really well for us. I bought this:
to put it on and take it off. I actually went over it twice with the oxidation remover and put three coats of the wax on it. We are happy with the way it turned out.
Our 1982 Scamp
doesn't actually charge the battery
from the car, nor does it charge when plugged in. This is something we discovered (as newbies last year) after a full season of camping. I bought one of these:
to check the battery
. It's very easy to use. We'd like it to charge when plugged in so we are scheduled to take it in to our local trailer place in March and will have this installed:
Mighty Mini Compact AC/DC Power Distribution Panel