Thanks ComputerGuy, that will save me from searching (fruitlessly) for a spade fuse that doesn't exist. Will see if i can trace the wiring but it goes straight down through the cabinetry through the floor. If it's a self-resetting breaker, perhaps it is near the pump/tank unit.
Not excited about crawling into the basement bay, taking the access door hiding the pump and tank and trying to get in/look around under the floor. But someday, i will need to replace the bellows, duckbills, etc...
Not sure what the builders of these RVs are thinking sometimes, other than making every wire and plumbing run as short as possible no matter the access needs later!
2016 Southwind 36L
2012 Southwind 36D
2003 Southwind 36RS