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  1. #1
    Code Burr
    Reputation: thebronze's Avatar
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    12v LED tail light project

    Hey guys, what are my options for a 12v solution for an old motorcycle? LED's look ideal since the vibrations wont kill the filament like a normal bulb. Is there a step down converter or driver to knock the 12 down to 7 or 3.4?

  2. #2
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    ebay.

    Search led taillight bulb

    Figure out what socket you have and you'll likely find a match.

  3. #3
    Light freak
    Reputation: scar's Avatar
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    I run my trunk lights off of 12V's







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  4. #4
    Code Burr
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    Scar, what are you using to step down the 12v current?

    Vancbiker, I'll take a look at those but i'd rather fab something up.

  5. #5
    Drinkin' the 29er KoolAid
    Reputation: kwarwick's Avatar
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    Quote Originally Posted by thebronze
    Hey guys, what are my options for a 12v solution for an old motorcycle? LED's look ideal since the vibrations wont kill the filament like a normal bulb. Is there a step down converter or driver to knock the 12 down to 7 or 3.4?
    Taskled makes a really sweet driver that is perfect for just such an application:

    http://www.taskled.com/ccxw.html

  6. #6
    Light freak
    Reputation: scar's Avatar
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    Yep, using the TaskLED CC5W set up for 700ma output




    ****

  7. #7
    Code Burr
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    What would you guys think about using one of these for a rear light and another for a brake light? I'd ditch the spring and the reflector. They look like they can handle 12v pretty easily. I have no idea how bright they are.

    http://www.dealextreme.com/details.dx/sku.11836

  8. #8
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    Quote Originally Posted by thebronze
    What would you guys think about using one of these for a rear light and another for a brake light? I'd ditch the spring and the reflector. They look like they can handle 12v pretty easily. I have no idea how bright they are.

    http://www.dealextreme.com/details.dx/sku.11836
    I'm guessing you'll want a 180 degree diffuser for it to possibly work. otherwise you'll probably have pink hotspots in your red plastic light cover.
    maybe look into this led + diffuser as well..
    http://www.dealextreme.com/details.dx/sku.1776

  9. #9
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    I built a pair of nominal 12 volt tailights that are about 100 lumens each and are slightly brighter than my cars LED tailights. They are a moderate spot and I aim them out at about 15 degrees to get a bit more rear angle coverage to each side, while still overlapping the beams straight back.



    A bit more info here.

    These bulbs modded:

    http://www.dealextreme.com/details.dx/sku.5325

    Newer style Marwi in paired set :$20 plus shipping.

    http://www.hoffmanamps.com/MyStore/catalog/partsled.htm

    Of course you could make an array of more of them if you wish.

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