Thanks Oklahoma Dan. I looked, and sure enough there is an access panel on the top of the compartment under the center of the slide, passenger side. I didn't pull it, but that's got to be right. Just didn't see it until I knew it was supposed to be there. So went to the other side, thinking okay no problem--no such access on the other side.
The driver side motor looks to be right above the generator--but there's no access there, even if you pull the generator. Nothing topside either, under the couch or anything that I can see Geez it shouldn't be this hard....should be used to it my now I guess.