Diode for 4-Way Blink Fix

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Custom LED


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  • 1N4001 Diode

Used for 4-Way Blink Fix and other LED retrofit applications.  Read about the 4-Way Blink Problem, and the Fix in our Blog.


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Customer Reviews

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  • flasher relay
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  • baloney
  • diagram
Barry M.
United States

Diodes for 4 way blinker fix

This is exactly what I needed. The diagram showed exactly how to assemble and fit. For $6 and s half hour of work I fixed the problem on my KLR 650


****** Six star review ******

Can’t say enough good things about Jon, the owner, and the overall customer service. Jon helped me navigate some electrical issues, was available on the weekend and was able to troubleshoot my issues via video. Amazing experience. My 2003 Shadow 750 Ace gave me the infamous four way flasher problem after the install, I pre-planned this obstacle and got four diodes with my purchase. Once you trace the wires from the signal indicator into the headlight the install is easy. Again, Jon came though with a helpful advice. I agree with other reviews, this is THE ONLY way to go. Take your time, trace and re-trace wires do not to confuse what goes where and you will be successful. I had to muck around a bit, but solved it once I realized my mistake. If you purchase the Blinker Genie, ELFR- Flasher Relay and these diodes, you are guaranteed to have the desired run-turn operation on two wire signals while not having a hyper flash or four way flash issue. Thank you Jon and Custom LED I now have more visibility in the rear of the bike!!!

Andrei verified customer review of 1N4001 Diode for 4-Way Blink Fix
Custom LED

It was my pleasure to assist you Andrei! I'm glad we got it all sorted out. To future readers of this review, the 4-way blink problem typically only occurs on motorcycles that have one single incandescent turn-signal indicator lamp in the gauge cluster.

George N.
United States

4 Way Blinker Fix

These diodes are the only way to go. All the other so called 'fixes' are baloney. Don't trust those you-tubers. Have some faith and dig into your wiring loom. Do it right. You will be good to go. I have a vintage 2000 Aprilia RSV Mille. It was a leap of faith to cut into the wiring. It worked though, thanks to the informative article about the 4-way blink problem on this site Custom LED.

Lyric Lewis

Outstanding Customer Service and Support

I called Jon after I bought the diodes for my 4 way blink problem, It was after hours about 6pm eastern time and he called me back and EVEN went the extra mile to video Skype with me to see exactly what I was doing wrong and how to correct my issue. Not only did he get me the proper tools I needed to fix my issue, he made sure to instruct me step by step. I had been working on the issue for two weeks and he helped fix it within an hour. Thanks again for all your help Jon!

David Beel

1N4001 Diode for 4-Way Blink Fix

This was a perfect fix for letting me run LED's on all my turn lights. It was fairly easy to wire in. Just what I was looking for. Thanks. Dave.

David Beel verified customer review of 1N4001 Diode for 4-Way Blink Fix

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