LED headlight issue

Discussion in 'The Garage' started by tunp, Nov 24, 2012.

  1. tunp

    tunp Been here awhile

    Joined:
    Apr 28, 2011
    Oddometer:
    305
    Location:
    almost SE PA
    I decided to replace the stock 35 w headlight of my TE610 w/ a 20w max LED. Great light but since i have done this the max battery light flashes indicating overcharge. If i add an addtional 15w or so bulbs to circuit problem solved. So i have researched adding resistors and just have my self more confused.
    What would be the recommended way to add 15 or so watt draw to headlight circuit w/o using bulbs.

    thanks
    #1
  2. sailah

    sailah Lampin' it

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    Turning expensive metal into scrap
    how about another 20w LED? twice the light.

    Or how about running the LED using a mini relay so the headlight circuit on your bike is essentially unconnected.
    #2
  3. victor441

    victor441 Long timer

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    If you do go with a resistor it needs to be about 15 ohms to dump about 15W...a 15W load would pull about one amp at 15 volts... R = V/I = 15/1....resistors are rated for power in watts so a 15 ohm 25W should work OK
    A zener diode might be a better solution, that is how the old British bikes regulated voltage....that way your lights could be switched and your battery would not get cooked by excess voltage. If you do get one intended for a British bike make sure it is for a later negative ground model, the PN is 49589

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    #3
  4. tunp

    tunp Been here awhile

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    Apr 28, 2011
    Oddometer:
    305
    Location:
    almost SE PA
    thanks gents.
    #4
  5. aardschok

    aardschok Fallout Rider

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    :lol3 that won't confuse him.
    #5
  6. sailah

    sailah Lampin' it

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    I'll explain using pictures and line drawings:D
    #6