Electrical - smoked up the cabin

Oh, we smelled something similar briefly while it was on the generator. Who knows, but it very well could be attributed to the generator - its a Harbor Freight knockoff to the Honda. ??? But it's maybe a month over a year old and rarely used (still.. yes, could be).

Just wish I could find the source of the smoke... that was a lot of smoke and I can't find a single burned wire. Thinking maybe I need to tear the Power Controller apart and give it a look inside. Not something I really want to do for fear of busting something - they don't give a whole lot of wires so it's still partially in the mounting hole.