Ultra Electrical Issue
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Extreme HDF Member
Joined: Aug 2007
Posts: 17,625
Likes: 1,665
From: Blairsville GA
Ultra Electrical Issue
Interesting thing happened tonight on my 2012 Ultra. Heading to a meeting about 20 miles from home, when the engine and battery lights came on. As I was turning around to head back home, the ABS light came on. Volt Meter on the bike indicated it was charging at 10V even at highway speed. By the time I got back to the house it was running rough.
When I got home from the meeting, it started up and ran fine. No warning lights and charging at 14V. Probably unrelated, but sometimes the neutral light doesn't light when it should.
Battery is new this year and the cables are connected tight. Any ideas?
When I got home from the meeting, it started up and ran fine. No warning lights and charging at 14V. Probably unrelated, but sometimes the neutral light doesn't light when it should.
Battery is new this year and the cables are connected tight. Any ideas?
Extreme HDF Member
Joined: Sep 2010
Posts: 14,744
Likes: 402
From: Phoenix '53, '88, '09 Big Twins
make sure your voltage regulator bolts are clean and tight.
cables at the other ends?
the tech board has a sticky on testing the stator and regulator- as does the service manual
mike
cables at the other ends?
the tech board has a sticky on testing the stator and regulator- as does the service manual
mike
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,897
From: Bedford UK
The bike voltmeter isn't very accurate, so use a multimeter to check numbers. As Mike suggests, run the charging system checks, as your symptoms are typical of a charging fault. That 10volts may be battery voltage, not the charging system if that has failed. Check the main cable connections at both ends, not just the battery, also the ground strap, if your bike has one (between engine and frame).
Seasoned HDF Member
Joined: Feb 2007
Posts: 6,067
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From:
Get a digital voltage meter.
Charge battery.
Then do the test of at rest, cranking and then high idle.
Then attach meter to bike securely and then drive only as far as you are willing to push or have someone follow you with jumper cables or take one of those small jump packs with you..
There is a possibility your regulator is failing at higher RPMS.
Charge battery.
Then do the test of at rest, cranking and then high idle.
Then attach meter to bike securely and then drive only as far as you are willing to push or have someone follow you with jumper cables or take one of those small jump packs with you..
There is a possibility your regulator is failing at higher RPMS.
Stellar HDF Member
Joined: Oct 2007
Posts: 2,806
Likes: 1,754
From: New Bern NC
In my limited experience (I'm on my second stator & third VR and I've changed a few out for others) it seems the voltage regulator is almost always an intermittent issue at first. Stators not so much.
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