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Old Aug 7, 2025 | 03:02 PM
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Angry Ultra Classic

Ultra Classic / I just put in a new stator new battery and a new voltage regulator when I took a ride the voltage jumps up to 16 volts at 70 MPH . I checked the ground wires and checked the battery bolts still an issue with voltage .any body else have this issue and can help . its a 2015
 

Last edited by rmbalon; Aug 7, 2025 at 03:03 PM.
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Old Aug 7, 2025 | 03:56 PM
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Start diagnosing:

https://www.hdforums.com/forum/elect...sting-1-a.html

https://www.hdforums.com/forum/elect...sting-2-a.html

 
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Old Aug 7, 2025 | 04:06 PM
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Sounds ok to me
 
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Old Aug 7, 2025 | 04:23 PM
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What was it before you installed all that stuff?
Are you using the HARLEY voltage gauge to read from?
Notoriously inaccurate!
 
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Old Aug 7, 2025 | 05:12 PM
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Originally Posted by MURPHCC1
Are you using the HARLEY voltage gauge to read from?
Notoriously inaccurate!
That part. Use a voltmeter and test it at 3k rpm see what the true voltage is at the battery. Those dam fairing gauges always looked pegged to 16 when its really only 14 or so. Only time I "trust" that gauge is if I see it going down or not going up with RPM, then I know to start looking for a problem.
 
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Old Aug 8, 2025 | 07:35 AM
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Originally Posted by MURPHCC1
What was it before you installed all that stuff?
Are you using the HARLEY voltage gauge to read from?
Notoriously inaccurate!
the stator was fried , found because it burned a hole in the voltage regulator . replaced with new battery and yet it does this
 
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Old Aug 8, 2025 | 07:37 AM
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I used a meter across the battery terminals to check it and it was at 17 volts at 4000 rpm
 
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Old Aug 8, 2025 | 07:49 AM
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17 volts is no good ... You should be in the 13.5 to 14.5 area ... Follow reply #2 in this thread
 
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Old Aug 8, 2025 | 08:37 AM
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Did you replace the voltage regulator and stator at the same time?

When they were replaced, did you use OEM or Cycle Electric parts?

Sure sounds like a voltage regulator issue.... It's rare, but not impossible, to get a new component that doesn't work properly. First, check your regulator mounting bolts. They need to be clean & tight. I believe the VR ground is through the mounting bolts to the frame. The older ones had a ground wire. That ground is critical to proper VR operation.
 

Last edited by hattitude; Aug 8, 2025 at 08:45 AM.
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Old Aug 9, 2025 | 07:07 AM
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Originally Posted by rmbalon
Ultra Classic / I just put in a new stator new battery and a new voltage regulator when I took a ride the voltage jumps up to 16 volts at 70 MPH . I checked the ground wires and checked the battery bolts still an issue with voltage .any body else have this issue and can help . its a 2015
It reads like you have a 2015 Ultra Classic of unknown ownership history, unknown mileage and unknown changes from factory stock.
You report replacement with new stator, new battery and a new voltage regulator.
It is unknown what brand of stator, battery or voltage regulator was used.
Replacement was because "stator was fried , found because it burned a hole in the voltage regulator"

You report: meter across the battery terminals to check it and it was at 17 volts at 4000 rpm
It is important to know the parts source as questioned earlier.
In 2012 there was a large number of regulators that were under recall. Yours might have the same part number.

I would suggest:
Review of ground connections.
Review of battery.. Is this a normal wet cell?, an AGM? or Lithium?
It is important since there are a few reports of lithium batteries having an over voltage situation.
Testing of stator for correct AC voltage with a digital meter is important too.
Then testing the regulator for DC voltage output.
From a distance it is reading like the regulator is not controlling the situation unless a ground cable is loose.
Many people only check the battery terminal side of cables and forget the other ends can be loose too.
 
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