H4 LED light replacement - brands/experiences/gotcha's ?

Discussion in 'Airheads' started by TopDogDave, Nov 14, 2017 at 2:06 PM.

  1. TopDogDave

    TopDogDave Manly, NSW, Australia

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    Looking at several including regular car brands (Phillips/PIIA etc) plus bike specific Cyclops.....all appear H4 compatible but is it as simple as that?

    Bike is R100GS PD 1990.
    #1
  2. tlub

    tlub Long timer

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    There are several threads on this already.
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  3. PaulBarton

    PaulBarton Adventurer

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    ADVmonster H4 Native is what I have in my /5. Had to remove the shield inside the lens then it transformed my /5 for riding at night.
    #3
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  4. Warin

    Warin Retired

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    #4
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  5. Uke

    Uke visualist

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    Lots of info in the below mentioned thread. But due to progress and experience, perhaps it is best read in reverse, i.e. begin with the last page and proceed in reverse.

    Read the reviews carefully. Early H4 LED replacements tended to scatter low beam light everywhere. It wasn't until suppliers began positioning shields below the low beam LED emitters that the scatter was controlled, better in some units than others. If you don't want to piss-off oncoming drivers as well as drivers going the same way as you but ahead of you, make sure the H4 LED replacement bulb has the shields and a good reputation for a correct low beam pattern.

    My own H4 headlight LED replacement bulb came from Amazon, couldn't be happier. It is one of a pair I was using in my Taco at the time it was totaled. I pulled them out before turning over the truck to the insurance company. Once I replaced the truck, ~ 3 months later, I bought another pair of the same H4 LED bulbs for this next Taco.




    Even the standard H4 halogen bulb isn't simple if you want optimum results with one. For that you really should use a pair of relays, low & high beams, and direct power from the battery. Use the original H4 leads to switch the relays.

    Eastern Beaver provides a plug 'n' play relay set that easily adapts to most AirHeads. I'm not affiliated, just a satisfied customer who appreciates such components that work well and are well assembled.
    #5