Welcome to iRV2.
Your problem sounds like the coach battery disconnect ( salesman ) switch has be touched OR the relay that the switch controls has failed , shutting down all power from the coach batteries .
I'll assume you've checked that the coach batteries are charged.
The battery disconnect switch should be near the entry door , possibly in a cupboard. The relay should be near the coach batteries.
The usual type of relay ( yellow circle in this photo ) has fuses attached that need to be checked, and is described in the pdf file attached. Page 7.
Also could you add more info on your unit , many members including myself , won't know exactly what a 1995WQ is . Manufacturer ? Class A ? Class C? Chassis ? Gas ? Diesel ?