New memeber with turn signal ?
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Stage III
Joined: May 2017
Posts: 3
Likes: 0
From: Maryland
New memeber with turn signal ?
Hi yall , new to this forum. Recently picked up a 2008 nighy train. My first harley and i love it. Im used to riding rice rockets and allthough harleys dont have the speed they are awsome best thing i did was sell my r1 to get the train. Seller gave me some LED front turn signals he tryed to install but the left signal stays on without blinking at all times. I messed with it a few hours ago with same problem. The right works as it should but left stays illuminated. Why is this ?
Road Captain
Joined: Jun 2010
Posts: 533
Likes: 57
From: Fredericksburg, VA
Have you tried swapping sides? i.e. the one that stays lit on the left, plugged into the right?
If so, you may just need a load balancer? Although, usually it's a fast blink, I think?
If the behavior follows the LED unit... It's the unit.
If so, you may just need a load balancer? Although, usually it's a fast blink, I think?
If the behavior follows the LED unit... It's the unit.
Seasoned HDF Member
Joined: May 2008
Posts: 21,032
Likes: 12,559
From: South Carolina
Forget about the LED signals for a minute...
First determine that the motorcycles turn signal and running light circuits are working properly.
The front turn signals are also running lamps, they use a dual filament bulb.
Whenever the ignition switch is on, the front signals should both be illuminated.
So when you get out your voltmeter and start reading voltage at the wires, you should see system voltage at the wires for the running lights, and when you check the voltage at the wires for the turn signal filament, you will see on and off voltage.
Once you know that the turn signal and running light circuits are working properly, you can connect the LED bulbs and see what is going on.
EDIT: Just read your latest post,
The stock bulbs blink fast, is that with 4 (new) OEM type bulbs installed?
Blink fast on both sides?
What about the front running lights?
First determine that the motorcycles turn signal and running light circuits are working properly.
The front turn signals are also running lamps, they use a dual filament bulb.
Whenever the ignition switch is on, the front signals should both be illuminated.
So when you get out your voltmeter and start reading voltage at the wires, you should see system voltage at the wires for the running lights, and when you check the voltage at the wires for the turn signal filament, you will see on and off voltage.
Once you know that the turn signal and running light circuits are working properly, you can connect the LED bulbs and see what is going on.
EDIT: Just read your latest post,
The stock bulbs blink fast, is that with 4 (new) OEM type bulbs installed?
Blink fast on both sides?
What about the front running lights?
Last edited by Dan89FLSTC; May 7, 2017 at 08:45 AM.
Road Captain
Joined: Nov 2014
Posts: 505
Likes: 24
From: Edmonton, Alberta
That is of course assuming your lights work proper with the intended incandescent bulbs in there.
Last edited by Berick; May 7, 2017 at 11:42 AM.
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Seasoned HDF Member
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From: South Carolina
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Road Captain
Joined: May 2007
Posts: 735
Likes: 30
From: Orlando, FL
Thanks, buddy. 
Aftermarket LED replacement bulbs or LED signal clusters are NOT all polarity sensitive. It varies from one manufacturer to the next.
Aftermarket LED replacement bulbs or LED signal clusters are NOT all polarity sensitive. It varies from one manufacturer to the next.
Club Member
Joined: Sep 2010
Posts: 15,420
Likes: 7,118
From: Beyond Fucital
Bad load equalizer.
Try normal bulbs front and rear, then change one, test, then the next (same SIDE), check, move to other side repeat.
Try normal bulbs front and rear, then change one, test, then the next (same SIDE), check, move to other side repeat.
Last edited by RANGER73; May 7, 2017 at 04:58 PM.