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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

    #1
    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?
     
    thegrandpoohbah, Nov 25, 2018
    #1
  2. Nov 25, 2018 at 12:43 PM
    #2
    Gunshot-6A

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    Gunshot-6A Prime Beef

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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.
     
    Gunshot-6A, Nov 25, 2018
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    Boomkanani likes this.
  3. Nov 25, 2018 at 6:40 PM
    #3
    Boomkanani

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    Boomkanani Well-Known Member

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

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    Taos Taco New Member

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

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    thegrandpoohbah [OP] Well-Known Member

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

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    Matmo215 Well-Known Member

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    Yup, you always need resistors with LED turn signal bulbs. I just stick to regular bulbs.
     
    Matmo215, Nov 25, 2018
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  7. Nov 29, 2018 at 8:40 PM
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    69 Jim

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    69 Jim 4-word Jimmy

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    :thumbsup:
     
    69 Jim, Nov 29, 2018
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  8. Nov 29, 2018 at 8:44 PM
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    black coffee

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    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.
     
    black coffee, Nov 29, 2018
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  9. Nov 29, 2018 at 8:48 PM
    #9
    VangaSTL

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    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
     
    VangaSTL, Nov 29, 2018
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  10. Nov 29, 2018 at 8:49 PM
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    Drainbung

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    Drainbung Somedays you are the show....

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    Last edited: Nov 30, 2018
    Drainbung, Nov 29, 2018
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Products Discussed in

2005-2013 Toyota Tacoma LED Turn Signal Flasher, LM449 (CF18)
$15.99
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