When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
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
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.
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.
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.
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.