just reading the op response, it looks like he had a relay that wasnt getting power when he pushed the room operation switch. winnebago uses its own switch for room operation and its notorious for failure. i carry one just in case.
its always wise to download service manuals for any of the systems that are on your coach.
all of the manuals from hwh corp. are free, on www.hwh.com. it would have walked the op thru the diagnosis.
there are wiring diagrams, location of components, and lots of useful information on the website.
note*** all of the relays, master, jacks, and rooms, are mounted on the pump assembly. usually on winnebagos of larger size, the pump assembly is located under the step area. it can be accessed by removing a nut under the step lip. the step raises up for access to the top of the pump. manufacturers choose the location of the pump. not all are located in a convenient spot.