My 2008 Surveyor has a bathroom wall switch on/off. If I turn on the switch of the ceiling bathroom light it will not turn on unless the wall switch is turned on. Is it set up that way so you can just have the switch on the light turned on and use the wall switch instead of fumbling around trying to find the ceiling light switch? Also, I turned my fan switch on an it doesn't operate. I checked the fuse on the fan and it looks fine, I also checked my fuse panel fuses. All appear fine...I also opened my vent and still no luck. Is there an interlock switch somewhere on the top of the vent cover? Could it be stuck or am I missing something?