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Disable your '97 to '00 TJ Flasher "Lamp Out" Detector for LED Tail Light Installation
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Scott Bessel came up with a real slick way to solve the flasher problem on his TJ after he installed his LED tail lights....
(Scott, Thanks for letting Mesa 4x4 put your solution up.)
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I was unhappy with all the fixes for the fast blinker rate; I refused to put resistors in line to solve the problem. After a few blown fuses and some experimentation I have found an easy way to disable the lamp out detector in the flasher, thus eliminating the fast flash rate. I found that most just added the resistors, but no one seemed to actually fix the flasher.
What I did was to eliminate the lamp failure detector circuit. I didn't want or need this circuit with LED lamps, this was the best answer.
Simple steps: (This works on my '00 TJ, your mileage may vary)
Remove the electronic flasher
Remove the flasher cover, a small screwdriver and some careful prying makes this happen.
Cut the trace coming from pin 7 of the chip.
Replace cover
Install flasher
You are finished.
Information on the U643B chip used in the electronic flasher here:
http://www.atmel.com/dyn/resources/prod_documents/doc4727.pdf
I did find out that the Triden Stant EP26 is an exact replacement for the factory flasher, and is identical inside, and easily found for ~$12.00 at your local auto parts store.
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Click on image for a larger picture.
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Click on image for a larger picture.
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