Engine light
Grand HDF Member
Joined: Jul 2012
Posts: 3,970
Likes: 900
From: Omaha
Before I embarked on the trip home I spent a day riding around locally to see how it was acting.
At idle my voltage was reading around 11-12.5 volts.
At highway RPMs/speeds all seemed OK with the voltage reading closer to 14 volts.
I decided to roll the dice and take the 600 mile ride back home.
I didn’t have any problems the entire ride home.
When I got home I checked the voltage regulator and the stator and both seem to be acting OK.
However my voltage reading was still around 11-12.5 volts at idle.
I took it to my local Indy mechanic for a quick look and the diagnosis was a bad stator.
At my Indy’s recommendation the stator and voltage regulator were replaced and I haven’t had a problem since.
They save the old stator and it was black as coal and smelled burnt so there’s was no doubt the stator was the problem.
The voltage regulator was replaced for preventative maintenance but I kept the old regulator just as a future back up if needed since it was likely OK.
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,298
Likes: 6,324
From: Honah Lee
The stator is what the average home mechanic can check with his volt/ohm meter.
The regulator without fancy equipment is best roughly checked at 2000 rpm.
Depending on battery conditions, state of charge and lights on, it should read between 13-14.9 volts DC. Nothing over 15 DC and NO AC voltage.
Only seen AC on an automobile and it was killing the aftermarket lifetime electronic ignition from AutoZone. I had emailed the manufacturer and he gave me the hint on what to look for.
A crude but usually good battery check is after a good charge over 24 hours on a maintenance charger, remove it. Click on lights for one minute.
Key off and check voltage. Should read 12.6-12.9. Key on and hit starter. Should not drop below 9.7 on a STOCK Harley.
If it does, get a new battery.
Always charge a new battery 24 hours no matter what they tell you, on your maintenance charger.
Then check regulator.
The regulator without fancy equipment is best roughly checked at 2000 rpm.
Depending on battery conditions, state of charge and lights on, it should read between 13-14.9 volts DC. Nothing over 15 DC and NO AC voltage.
Only seen AC on an automobile and it was killing the aftermarket lifetime electronic ignition from AutoZone. I had emailed the manufacturer and he gave me the hint on what to look for.
A crude but usually good battery check is after a good charge over 24 hours on a maintenance charger, remove it. Click on lights for one minute.
Key off and check voltage. Should read 12.6-12.9. Key on and hit starter. Should not drop below 9.7 on a STOCK Harley.
If it does, get a new battery.
Always charge a new battery 24 hours no matter what they tell you, on your maintenance charger.
Then check regulator.
Last edited by Jackie Paper; Feb 28, 2024 at 08:40 AM.
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Intermediate
Joined: Jun 2023
Posts: 27
Likes: 6
From: Yukon,Ok
Is this the stator connector?
Is the connector on the right the stator connector? It doesn’t seem to want to come out. I have pulled quite hard on it and don’t want to damage it.
Also, is this box on the backside of the regulator just a pass through?
Road Warrior
Joined: Apr 2018
Posts: 1,347
Likes: 820
From: Moneta, Virginia
The plastic box is hinged to open and you should find a connector there.
I’m not sure if the the rubber boot going into the case is a connector that you can unplug or if it’s just a pass through.
I’m not sure if the the rubber boot going into the case is a connector that you can unplug or if it’s just a pass through.
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