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LED parking/turn signal bulbs up front

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Have any of you installed LED turn signal/parking bulbs (3157) up front in your factory stock headlight housings?  if so, did you encounter a hyperflash situation?  Trying to decide if I want to replace the stock turn signal bulbs with LEDs as I get ready to replace my headlight housings (staying with halogen headlights) 


We have LED lights in the mirror turn signal things so not sure if there is already a built in load equalizer in the lighting circuits, or if I'll need to add them for new LED turn signal bulbs up front to prevent hyperflashing. 






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I put all LEDS on my 2009 3500HD.  Had to use resistors for the turn signals.  We must have messed up wiring the right one since it hyper flashes if I have the running lights/driving lights off, but not when they're on.  I need to find shorter T10 LEDs all the ones I've used or seen are too long to replace in the fender/clearance markers in the rear.

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On 8/15/2020 at 7:53 AM, Super 8 said:

Odd, using the flashers in the driveway, everything worked good but using blinkers I have hyper flash issues. I ordered a new LED flasher relay, going to try that next vs adding resisters.

4 ways won't hyper flash.  You have an '01 with the flasher relay you'll be fine.  Colossus and I can't use relays b/c we don't have them.  They're controlled by the computer or whatever it's called.  We need to use resistors.

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