This was a stressful problem. After working on the coach for a problem related to the boost solenoid in the engine bay, I unknowingly damaged the ANL 35 amp fuse for the start circuit power. This mistake led to all manner of problems.

Just removing the fuse can cause the filament to break because of age bonding the washer to the filament. And this is exactly what happened. This presentation is the following through of the signals and physical components in the start circuit for the engine. These modules were not obvious to me, and I found them dispersed across the engine bay, battery box and into the front of the coach.