Author [NL] [FR] [ES] [DE] [SE] [IT] LED Indicator bulb upgrade - sucess  (Read 14455 times)

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  • Offline Flyingbrick

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    Re: LED Indicator bulb upgrade - sucess
    Reply #16 on: Nov 29, 2022, 05.22 pm
    Nov 29, 2022, 05.22 pm
     :762: wow I don't know how the existence of switchback bulbs eluded me up to this point.
    Thanks coconut

  • Offline Coconut   gb

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    Re: LED Indicator bulb upgrade - sucess
    Reply #17 on: Nov 30, 2022, 07.24 am
    Nov 30, 2022, 07.24 am
    louping77

    The bulbs you bought for the rear probably have Resistors ( not fuses ) built in,
    whereas the front "Switchback" type have externally mounted Resistors.

    Resistors are needed to prevent "hyperflash" ( Excessively fast flashing of the bulbs ).

    This can occur because the Flasher circuit ( built into the Instrument panel with no separate Flasher Unit ),
    is designed to sense the current flowing through the Indicator circuit.

    Standard Indicator bulbs are usually 21 Watts, so 2 Standard Filament Bulbs would draw 3.5 Amps at 12 Volts.

    If one bulb fails, the circuit senses the reduction in current and flashes the remaining good bulb,
    together with the Instrument "Tell Tale" bulb at a much faster rate ( "Hyperflash" ) to alert the Rider of the failure.
    In the UK this feature ( or some other method of alerting an indicator bulb failure ) is a legal requirement.

    When LED bulbs are used, which do not draw as much current as standard filament bulbs,
    the current sensing circuit is fooled into thinking a bulb has blown, even when both LED bulbs are good,
    triggering the "Hyperflash" function.

    To overcome this, Resistors are used for each LED bulb, either built into the bulb,
    or externally mounted - their purpose is to increase the current drawn
    and prevent triggering of the "hyperflash" function.

    I cannot answer your question about which patricular bulbs create Interference,
    so my advice is - if you are experiencing Interference, turn the Indicator off
    or remove one of the bulbs, and if the Interference stops - you found the cause !

    Cheers  :821:




    Last Edit: Nov 30, 2022, 07.34 am by Coconut

  • Offline louping77   fr

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    Re: LED Indicator bulb upgrade - sucess
    Reply #18 on: Nov 30, 2022, 07.44 am
    Nov 30, 2022, 07.44 am
    Hi coconut
    So if i remove one led bulb
    And if interférences stop
    Thats could mean it needs
    To add resistors anyway?
    Thx so much

  • Offline Coconut   gb

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    Re: LED Indicator bulb upgrade - sucess
    Reply #19 on: Nov 30, 2022, 01.47 pm
    Nov 30, 2022, 01.47 pm
    No, It just means that bulb is causing the interference.

    The resistors are only to stop the “Hyper Flashing”

    Cheap “Chinese” LED bulbs using cheap components may cause radio interference whether they have Resistors or not.



  • Offline louping77   fr

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    Re: LED Indicator bulb upgrade - sucess
    Reply #20 on: Nov 30, 2022, 02.10 pm
    Nov 30, 2022, 02.10 pm
     Ok so the best solution
     Is to install same kind
     Of front led bulb bit with
     Resistors or reinstall OEM
     Bulbs?
     Thx

  • Offline Coconut   gb

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    Offline Coconut

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    Re: LED Indicator bulb upgrade - sucess
    Reply #21 on: Nov 30, 2022, 06.04 pm
    Nov 30, 2022, 06.04 pm
    Replace whichever bulb(s) are causing Interference with bulb(s) that don't !

    I don't think there's anything else I can help with here.  :027:


  • Offline louping77   fr

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    Re: LED Indicator bulb upgrade - sucess
    Reply #22 on: Nov 30, 2022, 06.21 pm
    Nov 30, 2022, 06.21 pm
     Ok coconut
    Thx so much
    For help
     Have a nice evening
     

  • Offline Goodoni   us

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    Offline Goodoni

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    Re: LED Indicator bulb upgrade - sucess
    Reply #23 on: Dec 08, 2022, 04.19 pm
    Dec 08, 2022, 04.19 pm
    *Originally Posted by trophied [+]
    Exactly what I put on the rear, but I used switchbacks on the front to get DRL advantange.  They are much brighter than stock.

    Do these act like running lights, in other words always on, then blink when the turn signal is on>

    Thanks,
    Goodoni
    Goodoni