[RayChez1]

How about the big switch at the door entrance that controls all the DC power in the coach. Maybe a wire might have come lose in the back of that switch.

Check the white wires to the connectors inside the fuse compartment.

Check the big red wire coming from the batteries in the fuse box to see if you have power up to the compartment and into the fuses. You will have to track it down step by step.