I'm sadly reporting that my test unit has died today. After a thorough cleaning and a session the unit no longer heats up, it appears my negative connection has come unattached. Anyway, I took a pcture of the VB all disassembled for shits and giggles.
It also appears that ISO had found its way onto the heater core as there are brown singe marks.
It also appears that ISO had found its way onto the heater core as there are brown singe marks.