By '02 I believe Ford had cured the spark plug issue. You probably have a 110V TV and the coach batteries are either 2X6V in series or 2X12V in parallel. Either serup will give you 12V of power. Higher end MHs may have an inverter that changes 12V to 110V but that is not common in kiwer cost models. You would need more batteries to do this for very long or get a 12V TV. The generator also puts out the 110V. There is nothing wrong with your coach in that regard. Your Refrig will need the 12V even to run on propane necause of the circuit board that contrils it.