My guess is that these are powered from the chassis batteries and fuses, not the coach house batteries and fuses.
So I'd look at the chassis fuses. I don't know about your coach, but my chassis fuses are in an outside compartment -- the first one on the left side, almost under the driver's seat. There are zillions of them down there. But they're all clearly labeled.
Woody & Sandy
2003 Chinook Cascade
2008 Newmar Kountry Star 3623