I'm stuck on this one
Road Master
Joined: Nov 2013
Posts: 1,099
Likes: 115
From: Clarion PA.
I have been told there is a motherboard of sorts back behind the bulb to go bad. I'm not sure the trikes have one or not. just sayin... Fred
Last edited by Fearless (old nickname); Aug 13, 2017 at 07:24 PM.
Cruiser
Joined: Jun 2015
Posts: 166
Likes: 29
From: SW Arkansas
If there is, my suggestion is not relevant then. I've not had to look into the wiring on mine.
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Road Warrior
Joined: Sep 2010
Posts: 1,260
Likes: 44
From: Back woods of Maine
Yeah, there is a pin connector which runs to a circuit board assembly. I haven't found anything yet, but I have become suspicious that the circuit board is the culprit. Since I last posted, I have disconnected, cleaned and reattached every ground connection that I have found. I even had an "ahaaa!" moment when I found the ground strap in the trunk loose. Nope, that wasn't it either. My biggest problem is I know just enough about DC electric circuits to know that I don't know enough about DC electric circuits. I'm beginning to think that a visit to the dealer service department is in my future.
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Road Warrior
Joined: Sep 2010
Posts: 1,260
Likes: 44
From: Back woods of Maine
Hooray!!! I finally found it! I just finished putting my rebuilt reverse motor and today I had some time so I put the trike body back on. As luck would have it, I trapped a wire under the body and I had to take it off again. Just pure luck, I caught a glimmer from a bare wire and upon further inspection, I found this. The wire harness had fallen out of the holders that mount it to the outside front of the trunk. One wire was severed and another was chafed almost all of the way through. We spliced the wires back together, soldered them, taped everything and put it back in the clips. Good as new.
Road Master
Joined: Feb 2008
Posts: 887
Likes: 133
From: Upstate NY
I was gonna say you probably pinched a wire when you set the body back on...LOL Don't forget to thank me. LOL
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If you are getting a correct light on the trailer, but not the Tri light something between the connector and the bulb. Could be a bad ground or wire, or even a bad bulb socket.
If you have an isolator for the trailer that the Tri light comes off of it could be that also.
#1 thing is make sure of the signal from where you have it and just follow it. But it does sound like a ground problem.
The readings should show the same for both sides, so if there is a question. At the bulb the brake and the turn use the same filament .
If you don't have a wiring diagram, go to the HD site and register your serial# then go look for the manuals. They have a diagram for the 2012 there.
If you have an isolator for the trailer that the Tri light comes off of it could be that also.
#1 thing is make sure of the signal from where you have it and just follow it. But it does sound like a ground problem.
The readings should show the same for both sides, so if there is a question. At the bulb the brake and the turn use the same filament .
If you don't have a wiring diagram, go to the HD site and register your serial# then go look for the manuals. They have a diagram for the 2012 there.
Last edited by sloufoot; Oct 10, 2017 at 01:50 AM.
Road Master
Joined: Nov 2013
Posts: 1,099
Likes: 115
From: Clarion PA.
Hooray!!! I finally found it! I just finished putting my rebuilt reverse motor and today I had some time so I put the trike body back on. As luck would have it, I trapped a wire under the body and I had to take it off again. Just pure luck, I caught a glimmer from a bare wire and upon further inspection, I found this. The wire harness had fallen out of the holders that mount it to the outside front of the trunk. One wire was severed and another was chafed almost all of the way through. We spliced the wires back together, soldered them, taped everything and put it back in the clips. Good as new.
ride safe Fred
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