EVO ultra charging problem
Thread Starter
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6th Gear
Joined: Feb 2012
Posts: 12
Likes: 6
From: tn
EVO ultra charging problem
I'm at my wits end with this bike and charging. It has a new battery, new regulator, new stator, and new rotor and I am still not getting a charge. Stator is checking out good, regulator checked out good and is showing 14 volts at the lead with it not hooked to the bike. When I hook it to the bike its not charging. showing 12.9 volts before start, 12.3 while running and not moving from that. Circuit breaker is showing good on both sides, I even ran the regulator wire to the positive side of the battery to bypass it and still no joy on charging. What am I missing?
Seasoned HDF Member
Joined: May 2012
Posts: 32,934
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From: Carlsbad, CA
Welcome.
Follow the diagnostic procure at the top of the electrical sub forum. And make sure to check continuity and resistance of all the wiring.
Follow the diagnostic procure at the top of the electrical sub forum. And make sure to check continuity and resistance of all the wiring.
Last edited by TriGeezer; Jul 5, 2022 at 10:33 PM.
HDF Community Team
Joined: Dec 2005
Posts: 5,422
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From: NC USA
I'm at my wits end with this bike and charging. It has a new battery, new regulator, new stator, and new rotor and I am still not getting a charge. Stator is checking out good, regulator checked out good and is showing 14 volts at the lead with it not hooked to the bike. When I hook it to the bike its not charging. showing 12.9 volts before start, 12.3 while running and not moving from that. Circuit breaker is showing good on both sides, I even ran the regulator wire to the positive side of the battery to bypass it and still no joy on charging. What am I missing?
Just because a battery is new doesn't mean it's good and more importantly, these factory volt gauges are not the most dependable. If fairing gauge is reading 12.9 with engine off/switch on, that's suspect.....
Grand HDF Member
Joined: Aug 2008
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From: Florida's gorgeous East coast
Battery cables can harbor internal corrosion above the lugs. If the cables are original, it's a cheap replacement. They can be good enough to show continuity with a meter...but still be a source of problems.
Thread Starter
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6th Gear
Joined: Feb 2012
Posts: 12
Likes: 6
From: tn
Are you reading the voltage (12.9/12.3) on the fairing gauge or on a separate voltmeter at the battery?
Just because a battery is new doesn't mean it's good and more importantly, these factory volt gauges are not the most dependable. If fairing gauge is reading 12.9 with engine off/switch on, that's suspect.....
Just because a battery is new doesn't mean it's good and more importantly, these factory volt gauges are not the most dependable. If fairing gauge is reading 12.9 with engine off/switch on, that's suspect.....
Thread Starter
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6th Gear
Joined: Feb 2012
Posts: 12
Likes: 6
From: tn
Followed the diagnostics and these all are new parts , including a second new stator second new regulator and second new battery. Everything is showing it should be working it just isnt. I know there has to be something Im missing just cant figure this one out.
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Thread Starter
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6th Gear
Joined: Feb 2012
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From: tn
I had changed those to larger gauge about 3 years ago. Maybe they could be corroded by now? Ive checked the connections and they are all good.
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Thread Starter
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6th Gear
Joined: Feb 2012
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Likes: 6
From: tn
Tourer
Joined: Mar 2009
Posts: 410
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From: Iowa
I'm not familiar with an Ultra's wiring specifically, but a voltage regulator usually needs to be well grounded to work correctly.
No paint, rust, or corrosion wherever it grounds to.
Missing, loose, or poor ground connections can cause weird electrical sh*t to happen on a vehicle or trailer.
No paint, rust, or corrosion wherever it grounds to.
Missing, loose, or poor ground connections can cause weird electrical sh*t to happen on a vehicle or trailer.