I have a 93 Liberty Prevost and the genetator has been difficuly yo get to run. I turn the switch to the "on" position and in a few seconds I hear a click from the generator and will eventually trip the breaker. For some time, I could turn the switch on and on the third attempt it would start. Once started, the generator runs and performs fine. As time has gone by the number of tries to get the generator to run has increased . Now the genetator just clicks once but never starts. Any idea where to start? I am retiring next week and we need to get on the road soon! Thanks for any help!