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Turn signals do not work after changing to LED lights?

Tiny
MONTANA666
  • MEMBER
  • 1993 FORD BRONCO
  • 5.8L
  • V8
  • 4WD
  • AUTOMATIC
  • 98,000 MILES
I have no blinkers or flashers. I have LED in the front non led in back except for 3rd brake light. Brakes, taillights, running lights, park and all work including LED third light put LED flasher in, but my blinkers or flashers won't even come on not even on dash.
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Wednesday, August 2nd, 2023 AT 6:39 PM

4 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,545 POSTS
Yes, when you swap to LED the resistance goes down so the flasher will not engage. They make LEDs with the resistor interrogated into the bulb. Here are the blinker wiring diagrams so you can see how the system works. Also, they make a flasher that will work with the LED's. Check out the images (below). Please let us know what happens.
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Thursday, August 3rd, 2023 AT 11:55 AM
Tiny
MONTANA666
  • MEMBER
  • 4 POSTS
I bought a new flash relay it's been put in, but I still have no flat flashes and no blinkers. Do I just buy the resistor LEDs and put them in the back too?
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Thursday, August 3rd, 2023 AT 1:45 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,545 POSTS
Did the signals work before the bulb was changed? And if you install the stock bulbs does the system work? Please go over this guide, it could help:

https://www.2carpros.com/articles/turn-signals-not-working-blinker

Please go over this guide and get back to us.
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Friday, August 4th, 2023 AT 10:52 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,545 POSTS
Anything?
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Monday, May 6th, 2024 AT 12:00 PM

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