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Shade Tree Mechanic
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2010 FLHTCU. Check engine light + red battery light accompanied by fluctuating voltage between 12 & 13 volts. Battery new and showing 12.55 volts. Connections to battery, starter, & engine ground tight. Stater input to voltage regulator 6 ohms +or-.
 

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We are a group of like minded people that happen to love Harley-Davidson motorcycles. We like to get to know new people a little bit, just the same as in any social environment. So do us a favor and tell us a little bit about yourself, the bike that you ride, any other hobbies that you enjoy. We are willing to help anybody that is in need and we also like to know who we are working with.

Welcome to the forum from Virginia. Plenty of good folks and good information here.

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Just Ride
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Regulator is going bad
 

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2010 FLHTCU. Check engine light + red battery light accompanied by fluctuating voltage between 12 & 13 volts. Battery new and showing 12.55 volts. Connections to battery, starter, & engine ground tight. Stater input to voltage regulator 6 ohms +or-.
Stator is bad.
Test from each connector pin to ground, should not read continuity. Then test AC output from the stator with the engine running. Should be approx. 15v AC per 1000 RPMs. Connect meter leads to both stator pins for test, pin to pin.
 

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Welcome from Kansas.
 
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