Electrical Problem
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6th Gear
Joined: Oct 2014
Posts: 14
Likes: 0
From: miami
Electrical Problem
I have a 2010 ultra classic. bought it 3 months ago. it had 5600 miles.
two weeks ago i was riding and my volt meter dropped to 10 volts and the check engine and batt lights came on. I turned around and headed for home and within a few minutes the VM jumped back to 13-14 volts and the lights went out and did not return for the duration of the trip. since then, while riding this exact phenomenon has occurred, coming and going and then not to be seen for a while. last night it did it again on a ride but this time it did not go away and my VM dipped to 8 volts as one system after another shut down. when i got to my GF's house it was dead. I hooked up the battery tender overnight and in the morning i had enough battery to get home and for the first part of the ride, about 10 min, it was working, but the last 10 min it dropped to 10 v and ck eng and batt lights are on. i checked and wiggled wires in and out of the regulator with no luck. any ideas what is going on???
two weeks ago i was riding and my volt meter dropped to 10 volts and the check engine and batt lights came on. I turned around and headed for home and within a few minutes the VM jumped back to 13-14 volts and the lights went out and did not return for the duration of the trip. since then, while riding this exact phenomenon has occurred, coming and going and then not to be seen for a while. last night it did it again on a ride but this time it did not go away and my VM dipped to 8 volts as one system after another shut down. when i got to my GF's house it was dead. I hooked up the battery tender overnight and in the morning i had enough battery to get home and for the first part of the ride, about 10 min, it was working, but the last 10 min it dropped to 10 v and ck eng and batt lights are on. i checked and wiggled wires in and out of the regulator with no luck. any ideas what is going on???
Supporter
Joined: Aug 2008
Posts: 1,272
Likes: 1
From: North East Ohio
Check the obvious & simple things first. Have you checked all the connections for tightness on the battery & frame grounds. Just seems odd the way it swings so much & comes & goes.
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Stellar HDF Member
Joined: Nov 2005
Posts: 3,183
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From: KMHT KFMY
How old is the battery? You could have a cell shorting out (plates worn and falling over when you hit a bump)
I'd start with cables/connection check at the battery, and a load test of the battery, if that checks out I'd check the stator wires and voltages, then do a diagnostic on the regulator.
I'd start with cables/connection check at the battery, and a load test of the battery, if that checks out I'd check the stator wires and voltages, then do a diagnostic on the regulator.
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6th Gear
Joined: Oct 2014
Posts: 14
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From: miami
just checked stator, all phases 72-75 vac, connected to regulator and measured output of regulator........0000000
this happened to my old flhtc 2007, at 9000 the regulator went bad. smh wth?
this happened to my old flhtc 2007, at 9000 the regulator went bad. smh wth?
Extreme HDF Member
Joined: Nov 2007
Posts: 14,670
Likes: 139
From: East of the Sun, West of the Moon
regulators go bad. hell my 2012 that I bought in 8-12 had the recall so I brought it in, they changed regulator, left the dealer, 2 miles down the road my headlights and passing lamps went down to almost nothing, turned around dropped it off, they changed it again, a week later I was back at the dealership getting it replaced again. The one that's on it now (4th including stock one) has been fine ever since
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