I don't think it's reversing polarity Lang. It appears that the residual magnetism is insufficient to enable a high enough voltage to be developed to pull in the reverse current relay.
The first thing to do, I would think, is to monitor voltage output which should be between 7.2 and 7.4 when charging.
I would like to know the fix for this one as my Dodge has started doing the same thing.
Someone out there has the answer.
David
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Hell no! I'm not that old!
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