My 06 Daybreak has the switch on the left wall of the stairwell. Right above the light switches. Also my house batteries are under a step in the stairwell. Must be lots of differences in those years. I do have an inline breaker / fuse for my jacks that is under the pump motor. You need to lay on the ground in front and look up. With them, it could be anywhere. One thing that happened to me was a ground wing nut on one house battery wouldn't tighten and that effected just about everything. That might not be your problem because you said you could start your generator. Mine wouldn't start without that ground connection.
