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Tail light blinking with turn singal

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Old Feb 15, 2024 | 11:19 AM
  #1  
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Default Tail light blinking with turn singal

I have a 1994 Fatboy, and I recently replaced the rear fender with an original one. Additionally, I bought a new set of turn signal lights and a new LED tail/brake light. I installed everything correctly, but for some reason, the brake light is blinking along with both turn signal lights. I used brand-new cables for the entire setup, so I don't think there's any interference from a damaged cable. It's odd; I grounded the tail light using its bolts, but the same issue persists. The turn singal lights are not LED.
 

Last edited by BravoKilo; Feb 15, 2024 at 11:20 AM.
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Old Feb 16, 2024 | 08:21 AM
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Sounds like the LED tail light is not compatible with incandescent bulbs. Try it with the original tail light. If it works, bad LED tail light.
 
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Old Feb 16, 2024 | 11:41 AM
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Try a ground wire directly from the battery just to eliminate the possibility of bad grounding.
 
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Old Feb 16, 2024 | 02:28 PM
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How did you wire the new turns/
The 94's turn are turn only, no ground wire, only 1 wire to each side from the TSM.
The original tail/brake light is just that, tail/brake. only 2 wires.
What did you do for connections?
 
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