Dennis, Start with a Serial Number. It's always good to know exactly what you have and on top of that I have a feeling that you may be in need of an electrical schematic to go tracing power. Has it had the problem (intermittent by the sounds of it) ever since you bought it.? Remember you're there with it, no one else is. How about something like "It can be working fine then suddenly out of the blue the engine stops" or "I can be using it one day with no problems then come to it the next and when I turn the key on the warning lights don't light up and everything is dead".