Ouch! Can't help you with locating wires, but would report a comment from a friend who had rats get in his Seneca Super C. Besides engine wiring damage, they got inside and tore up some of the upholstery. Total bill was over 3K!
Our Vegas is parked near his, and the varmints chewed a wire to the generator. $200 in labor, because the carb had to be removed to get to the wire.
The moral of the story: Check your coach in storage now and then.