I fear this won't have a simple solution, but thought I'd give it at shot. New to me 1999 Patriot 330hp. Batteries were pretty much toast. Replaced with Trojans and 31 Group chassis batteries. Connections are clean and tight. Never any problem starting the coach or generator. Both run great. All 120 and 12v appliances, lights, etc...work good. However, as in so many posts here, brand new chassis batteries draining fast. Cat mechanic comes over, checks things out, determines alternator is fried, probably from trying its best to charge those previous dead coach batteries. Replaces it with new Leece-Neville Duvac. Okay? Then this... when turning the key on, Silverleaf starts to boot, then quits. Two or three seconds, does it again, and again. Never a problem before new alternator. Cat will start, and continue to run, if holding the key to start position. But, it starts only when hitting one of these 2 or 3 second "electrical spike" occurrences when Silverleaf and gauges try to start. So, I assumed this may be caused by a faulty ignition solenoid. With the key in the on position, in the electrical bay, the solenoid was clicking on and off, every 2 to 3 seconds, as was the Allison ecu. Replaced the solenoid along with its diode. No change. Still clicks. Batteries well connected. All batteries reading 13.4 at bank and left buss bar in electrical bay. Delivers bursts of 12v current to right buss bar as solenoid clicks on and off. Could the mechanic have shorted something when installing the new alternator? This did not exist prior. I feel I may have a lot of wire tracing coming up, unless someone might have some ideas, or places to start. And from reading here, you guys are way out of my league when it comes to knowing stuff about these coaches. I do love mine, I just want all things working.
Thanks in advance!
Mark