I don’t know your coach specifics either, but I think Edensob is on the right track. Sounds like you might have a dead internal chassis distribution fuse panel, which on my old F53 chassis is by the driver’s left foot. Of course I could be very wrong.
Some folks suggest that in many coaches (not sure if this includes yours) there is a 100 amp re-settable DC breaker (near the chassis battery) in series with the power cable from chassis battery to that fuse panel. If you don’t have a distribution fuse panel under dash/on floor near the drivers left foot, try checking in a basement cubby near driver front. “If” your coach uses this 100 amp breaker.....try tracing the cable from the chassis battery + terminal and see if you can find this main breaker. It would make sense to place it near the battery end of the cable, but like anything RV.....it could be anywhere. Good luck.
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