I had an issue with a starter that wouldn’t disengage on our Pace Arrow. After several ruined starters, tows, and clueless repairmen, I dug in myself and discovered an old GM service bulletin about a bad solenoid from the factory. Turns out it was hidden behind and mounted to a vertical steel angle iron support of the doghouse. I was lucky to find it barely with my fingers (when all else fails, follow/feel the wires). It was a secondary solenoid, not the main starter one, which added perplexion.
It could be you have a similar situation, with a solenoid between the dash ignition and starter that has points burned together or with no gap left. Or perhaps a bad relay. It no doubt is the cause of the overheating and failure of your last starter, and if not replaced will keep ruining starters. Others here may have familiarity with your coach model and can assist, and there may be a wiring diagram “book” for it available in the Club’s Coach Assist section, although it may not be detailed enough to show everything you need.
Joel
