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Thread: H3 led bulbs.

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    H3 led bulbs.

    I hope to get some answers because do not know what else I can do.
    I want to replace my H3 55W bulbs in fog lights with led bulbs. I bought a pair on e-bay for $6.99. I installed them and nothing. Regular bulbs work fine. I've tried led bulbs with direct battery hook up and they work fine, what gives? I have a good ground and all connections are fine, checked power to the fog lights with voltmeter, it is OK, what am I missing?


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  2. #2
    Moderator of cats. sherob's Avatar
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    Re: H3 led bulbs.

    Are these the ones with the posts on the side? You might try turning them 180* and putting them back in... I think I had the same problem with mine.
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  3. #3
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    Re: H3 led bulbs.

    Those are the ones with a wire coming out. They can go only one way because of the cut-out slots in the base.

  4. #4
    WeeSTer's Avatar
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    Re: H3 led bulbs.

    Quote Originally Posted by STPete View Post
    Those are the ones with a wire coming out. They can go only one way because of the cut-out slots in the base.
    Some LED bulbs are polarity sensitive so you may need to reverse the leads on your fog lights if you cannot flip the bulb in the socket.
    Chris

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    Re: H3 led bulbs.

    Quote Originally Posted by WeeSTer View Post
    Some LED bulbs are polarity sensitive so you may need to reverse the leads on your fog lights if you cannot flip the bulb in the socket.
    Got it working, that's exactly what it was, reversed polarity, thanks.

  6. #6
    65 years of Trivia Gonzo's Avatar
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    Re: H3 led bulbs.

    How does the brightness compare with the incandenscents?

    Also, what is the current draw?
    Gonzo - Planetary Invasion Commander (Rtd.)
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  7. #7
    WeeSTer's Avatar
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    Re: H3 led bulbs.

    Quote Originally Posted by Gonzo View Post
    How does the brightness compare with the incandenscents?

    Also, what is the current draw?
    I have been doing a bit of research on LED's and the general rule is that
    1W LED = 10W Incandescent.
    I have replaced the MR11 spots in my driving lights with 1.5W SMD MR11 LED's and they are about 50% of the 35W halogen bulbs. They are still quite visible since they emit a very white light compared to the yellower halogens but I am still looking for something brighter that doesn't cost an arm and a leg.

  8. #8
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    Re: H3 led bulbs.

    Quote Originally Posted by Gonzo View Post
    How does the brightness compare with the incandenscents?

    Also, what is the current draw?
    Original bulbd were 55W. When I turned them on while bike was running, rpm went down 100 or so, I could tell alternator was working OT but the lights were very bright. LED's are not even close in brightness, but I want to be seen more during day or night and they will do. Current draw is minimal, around 1.5Ams compare to over 9 with original ones.

  9. #9
    Bob Meyer Blue STreak's Avatar
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    Re: H3 led bulbs.

    LED units bright enough to serve as real fog or headlight bulbs are still hideously expensive, which is why you only see them on cars like the Audi R8 and Porsche Panamera. The only relatively cost-effective way to lower load and maintain (or increase) brightness is with HID conversions. But then you need to find space for the igniters, and you may end up with a poor beam pattern using HID lights with reflectors and lenses not intended for them.
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  10. #10
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    Re: H3 led bulbs.

    Prices on "bright" led are high but it's like everything else, give it few years and they will come down. There is a company (forgot it's name) that sells bright fog lights but they want something like $130 for each light, pretty expensive.

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