In your large 12v power distribution box in the outside compartment under the driver’s side there is also a 50 amp breaker to check. It is unlikey that you blew all those fuses at once. More likely that it is a breaker. I had the same thing happen to me when I tried to start my Vegas using the eme4gency start switch. It somehow tripped that breaker in the battery box and I had no 12v power to the coach.
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