jjroxus Posted January 17 Share Posted January 17 The Leece Neville alternator stopped charging the batteries again yesterday. When I got the coach a couple of years ago I had a no-charging problem. It turned out to be the battery isolator was bad and I had to replace it to get the batteries charging. After that, I had a couple of times over the past year where the alternator would stop charging, but for some reason after sitting for a few hours or overnight it would be charging again-- no further issues. That became a mystery! I thought this could be related to the ignition key switch and had planned to change out the switch. However today I unplugged the connector going to the alternator in the engine compartment. When I check for voltage between the three wires-red-black & yellow with the ignition key switch turned on there is no voltage. When I check for voltage with my meter with the ground wire touching the frame and red wire to individual wires, the red wire has twelve volts + all the time, the yellow wire has 12 volts +just when I turn the ignition key is turned to the first click before engaging the starter and nothing on the black wire. I did check the input at the battery isolator and it measures 12.5 volts. From my understanding this would indicate the alternator is bad. Is there anything I am missing in my testing ? Where is the best place to get a new alternator? Your comments and suggestions are much appreciated. Thank You JJ Link to comment Share on other sites More sharing options...
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