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67 LED taillight conversion 4 way flasher problem

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Old Feb 6, 2025 | 07:46 PM
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Default 67 LED taillight conversion 4 way flasher problem

I converted the taillights on my 67 to LED. I installed the recommended United Pacific 90650 LED flasher with the ground wire and reverse polarity plug, and the turn signals work correctly. I also installed the same 90650 flasher in the fuse block for the 4 way flashers but the flashers won’t work and they worked before converting to LED. Any help would be appreciated.
Thank you
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Old Feb 6, 2025 | 07:52 PM
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Don't really know, but with everyone switching to LED's, anything that "blinks" or flashes, doesn't work right. I'm sure someone will provide the work-around.
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Old Feb 7, 2025 | 07:40 AM
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Just answered this on the Camaro Forum. Check the polarity on the flasher as you may need to reverse the wires or buy an adapter. If that fails, buy a grounded flasher at your local FLAPS or Amazon or Fleabay. Had to use one on the 68RS.

https://www.ebay.com/itm/12213047650...3ABFBMiJfzhpxl
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Old Feb 7, 2025 | 09:16 AM
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I tried both an electronic flasher and an adjustable electronic flasher and couldn't get it to work right - either would not blink or would blink too fast. I believe there are some more complex workarounds out there but I solved it by just leaving conventional 1157's in the front park / turn lights and converting everything else to LED.
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Old Feb 7, 2025 | 09:39 AM
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On my '74, I had to reverse polarity only on the turnsignal flasher, 4-way did not and mine works perfect
I would make sure you and clean grounds on the rear tailight housings
I plan to try this on my '67 also, but I am also going to try switchbacks for up front (I am going to put white lenses up front)
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Old Feb 7, 2025 | 09:53 AM
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I have the same issue on my 67, but I have not put any effort into solving it yet.
Darin
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Old Feb 7, 2025 | 10:02 AM
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Thanks for the input. I will buy the reverse polarity plug and report back. Shouldn’t be this difficult but…!
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Old Feb 8, 2025 | 07:06 PM
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Problem solved! Reverse polarity and a better ground and the 4 way flashers are working great!
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