Good luck. My experience in talking recently to a few other 35SB3 owners is that the wiring greatly depends on the mood of the folks building that coach on any particular day. (They say, never buy an RV or car that was started on a Monday or a Friday...) In ours, the entire rear portion of the coach...as in EVERYTHING that was 110 volts (except the A/C) was on the SAME 15 amp circuit. This includes counter plugs, microwave, wall plugs, TV, DVD player, etc.) Go figure. Others say that several circuits were used in their coach. My dealer fixed it, but it does seem to border on the ridiculous, ay? I even talked to Sandy @ Carriage about it and she said, "we do it that way on purpose for energy conservation purposes..." Uh, huh....sure, well that makes TOTAL sense on a coach with 50 AMP service and a breaker panel, with several circuits unused. But, it's all better now that it's been fixed.
Kinda wondered about that. My Cougar (last 5vr) had several circuits unused in the panel, and those same circuits all tied together in the panel. Not really sure the folks building the rig understood what they were doing, but am sorry to hear it may well carry over to the new coach.
I'll contact Carriage, but don't expect anything better answer than "huh".