Originally Posted by Judge
You don't mention if the fuse blows right away or after a period of time or after specifically turning something on.
If it blows right away or after turning something on.... I would start tracing wires and looked for a pinched / chaffed wire. Since you mentioned the awning and since it moves and wiring is moving with it, I would start there. Start at the awning motor and work your way back.
You also should check to make sure you have the properly rated fuse installed for that circuit. If it is a used coach, someone may have put a lower rated fuse in it.
Thank You, Did find the problem, sadly poor workmanship on Thors part .
A few stans of wire where sticking out of a wire nut , and making contact
with the under cabinet speaker housing. Thanks again for your input.