led lights

Discussion in 'Tech/Mech General' started by voyagerstan, Jul 5, 2012.

  1. voyagerstan

    voyagerstan Read Only Funster

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    hi can someone help .i have just replased the rear lights onmy motorbike rack with led lights (cos they are thiner) all light work properly apart from indicaters which have 10 leds . only 2 blink i have conected them to a sperate 12volt suply and they work . i have also replaced the flasher unit with one that is compatable with led and ordinary bulbs . has anybody any ideas .(only serious replys please or is that asking too much:RollEyes:)
    stan:Sad::Sad::Sad:
     
  2. hilldweller

    hilldweller Funster Life Member

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    Polarity ?
     
  3. voyagerstan

    voyagerstan Read Only Funster

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    leds

    only single yellow wire for blinkers when conected to spare batery and earthed it works fine .:Sad:
     
  4. pappajohn

    pappajohn Funster Life Member

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    do you mean the leds light fully when connected directly to a 12v source ....no flasher unit ?

    If so i would say it is a faulty flasher unit not supplying enough current....dry solder joint inside or a poor connection

    I have few multi led lanterns/torch's and as the battery flattens, the leds go out a few at a time until the battery is flat....not enough current to light fully..
     
    Last edited: Jul 5, 2012
  5. voyagerstan

    voyagerstan Read Only Funster

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    yes when conected direct all lit . new flasher unit which i was told i needed compatable with leds and ordenary bulbs . stan
     
  6. pappajohn

    pappajohn Funster Life Member

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    Mmm!!! faulty unit in my book.

    if it was the led's they wouldn't light if connected direct, with or without a flasher unit.

    standard flasher unit is nothing more than a bi-metal strip with contacts on.

    open and close with heat (resistance) in the circuit...gets hot and opens, cools and closes..then repeats the cycle.

    very little resistance with led's so it could be an electronic on-off timer or a standard unit with a resistor built in to simulate a pair of 21w bulbs.
     
    Last edited: Jul 5, 2012
  7. FULL TIMER

    FULL TIMER Read Only Funster

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    Are you sure you don't need a resistor on the leds, I know when replacing some indicator lamps with led's on cars you need to add a resistor as the current the led's draw isn't enough to activate the flasher relay.
     
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