Kinda talking to myself here, but for future reference for anyone else, the 2k did the trick.
All told a simple enough fix. Biggest hang up when you do it is that one of the control cables passes over a cover that has to come off, and the control cable is snapped into this one-way doohickey...
So I really like the idea of the PCB solution versus the spliced wiring. Where does this PCB live? I assume it's inside the housing that the black plug plugs into?