And the mystery continues:
As I have been tracking the cause of the malfunction, a new issue has surfaced. The generator remote starts switch at the dash functions the same as the levels lights. I cannot start the generator without the motor running. I have checked grounds, loads, etc. but have not found a source. Again, all switches at the dash function except the generator start and all switches at the control panel except the levels unless the motor is running. Everything else functions from 12 volt house batteries normally. The generator control is at the dash, the levels panel is near the rear of the coach. No signs of critter infestation or chewed wires.