with most any motorized RV, there will be a 'fuse box' for the vehicle, and a 'fuse box' for the House 12v fans, lights, water pump, levelers, etc, usually located with, or near, the 120v Main Panel breaker box and Converter.
I have a fuse box for the dash stuff. A fuse box under the hood. A fuse box in one of the basements. Another under the bed. One near the batteries. They are all over the place. Seems like every model is different.
I'm going to make sure who ever buys mine knows where they all are and what each is for. Priceless.