My MC21 has had constant charge problems, mostly low out-put. I have a new reg/rec, battery and have replaced the stator that is known to be good. I ride the bike for weeks and months and as long as I don't use the headlight everything is fine. I have wired in a Dyna charge monitor which tells me high, good or low voltage idiot light. But once I turn the headlight on at any ridding RPM the voltage drops and the low light comes on. at idle it will go out. The bike test 13.9v at idle approx. and stays good at higher RPM if the headlight isn't on. The Dyna monitor is wired into the igniton switch live wire once the key is truned on and I'm note sure if it's just a voltage drop there. I have been told by a place that rebuilds stator that the electrical system is only design to keep the battery at min charge when a bike is running. I have tested many other bikes and never seen voltage go so low unless there is a problem. Has anyone else had any thing like this ?
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