New bog...

Perhaps not glamorous work, but important nonetheless.  The 12V head started working intermittently, and when I tried to service it, many of the screws holding the motor to the toilet broke off.  So I purchased an entirely-new unit from Burnsco Marine.  It took an afternoon to install, plumb, and wire, and it certainly does look and function much better.  The original toilet would have been manual (?), but this old 12V unit was at least a decade or two old, judging by the corrosion of the hardware and the state of the motor.

I begin to sense that many components on Kiss Kiss are in need of replacement...such as it is with boat ownership.