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Turn signal blinking rapidly even after new bulb installed

Discussion in 'Lighting' started by thegrandpoohbah, Nov 25, 2018.

  1. Nov 25, 2018 at 12:40 PM
    #1
    thegrandpoohbah

    thegrandpoohbah [OP] Well-Known Member

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    So the left turn signal started to blink rapidly and sure enough the fron turn signal was out even though the DRL was still on. I went to Canadian Tire and got these Sylvania LED bulbs as a replacement: https://www.sylvania-automotive.com/products/interior-and-exterior-bulbs/zevo-led/3157a_zevo.jsp

    After installing them the turn signal is now working again as well as the DRL but it is still blinking rapidly. What's more, I installed the right side and it is now doing the same. Tried reversing the bulb orientation but it made no difference. Is there a trick to these or are they just not compatible because of the lower power draw?
     
  2. Nov 25, 2018 at 12:43 PM
    #2
    Gunshot-6A

    Gunshot-6A In God We Trust; All Others We Monitor

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    Not enough resistance in the circuit which is what causes the "hyperblink".

    They sell resistor kits to increase the level to get the blink back to "normal" speed. Although, I don't think it really hurts anything. Just blinks faster.
     
    Boomkanani likes this.
  3. Nov 25, 2018 at 6:40 PM
    #3
    Boomkanani

    Boomkanani Well-Known Member

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    As @Gunshot-6A mentioned, you need to add resistors. If you look at Amazon...some of the LED bulbs come with the resistors
     
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  4. Nov 25, 2018 at 8:56 PM
    #4
    Taos Taco

    Taos Taco New Member

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    I am new here, but I would think your flasher relay has gone bad.
     
  5. Nov 25, 2018 at 9:35 PM
    #5
    thegrandpoohbah

    thegrandpoohbah [OP] Well-Known Member

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    Tullie D and skierd like this.
  6. Nov 25, 2018 at 9:37 PM
    #6
    Matmo215

    Matmo215 Well-Known Member

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    Yup, you always need resistors with LED turn signal bulbs. I just stick to regular bulbs.
     
  7. Nov 29, 2018 at 8:40 PM
    #7
    69 Jim

    69 Jim Well-Known Member

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  8. Nov 29, 2018 at 8:44 PM
    #8
    black coffee

    black coffee A is A.

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    The circuit is designed for use with regular incandescent bulbs so when you change bulbs to LED, it doesn’t function the same way because LEDs don’t have the same resistance. That’s why resistors are needed.
     
  9. Nov 29, 2018 at 8:48 PM
    #9
    VangaSTL

    VangaSTL Well-Known Member

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    I think 2nd gen has a flasher module that can be replaced with a LED compliant module. Not sure where the module is though. Behind the guage cluster perhaps. I seem to recall a thread that showed where it was. The module is the size of a relay and easily pops in and out. If you buy a LED compliant one it should resolve your issues
     
  10. Nov 29, 2018 at 8:49 PM
    #10
    Drainbung

    Drainbung Somedays you are the show....

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