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Thread: Headlight wiring help please

  1. #1
    Join Date
    Jun 2017
    Location
    Russellville
    Posts
    33

    Default Headlight wiring help please

    I have a 2002 H3-45 Featherlite with the old 4X6 head lights. Recently I changed these lights out with 4X6 LED fixtures. Everything works as it should but the low beams are not enough light for me. The way these fixtures work, there is a high and low beam in each fixture. In low beam a few of the bulbs light up and in high beam they all light up. The wire harness for these lights consist of three wires, Ground, Lo beam,and a High beam. My question is, could I run a jumper wire connecting both the High beam and low beam wire an make all of the bulbs burn all the time on that low beam bulb?

    Thanks,
    David

  2. #2
    Join Date
    May 2012
    Location
    Beverly Hills
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    3,216

    Default

    It's easy to wire all 4 low beams and it's just as easy to wire all 4 high beams. If the high beams don't turn on the low beams, then you'll have to put a blocking diode between the high and low beam power feed. You may be able to do the same with the high beam relay. If you don't all 8 will be on regardless if you high or low beam selected.

    I would normally be concerned about wire gauge, fuse ratings, and relay ratings. None should be a concern with LEDs.


    Gil and Durlene
    2003 H-3 Hoffman Conversion

  3. #3
    Join Date
    Jun 2017
    Location
    Russellville
    Posts
    33

    Default

    Gil,

    When the bright lights go on, all of the light bulbs in all for lights light up. On low beam only a select few LED bulbs light up in the two Low beam lamps. Would this still have a need for the Diode you mentioned? I have very little electrical knowledge is why I ask.

    David

  4. #4
    Join Date
    May 2012
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    Beverly Hills
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    3,216

    Default

    No, no need for a diode. Simple extend the low beam wire from one light to the adjacent light on each side. Just know you might experience a lot of people flashing their high beams at you when they see 4 headlights on.


    Gil and Durlene
    2003 H-3 Hoffman Conversion

  5. #5
    Join Date
    Jun 2017
    Location
    Russellville
    Posts
    33

    Default

    Gil,

    Each of the light fixtures has a hi and low beam. On high beam, all four fixtures light up and all of the LED lights come on. In lo beam, only the two low beam fixtures light up and only half of the bulbs in those two fixtures light up. I am wanting all of the bulbs in the low beam fixtures to stay on all of the time. That is why I was asking if could tie the high and low beam wires on the back of the low beam bulb together to make all of the bulbs in the low beam fixture to light up all the time. Clear as mud I know.

    David

  6. #6
    Join Date
    May 2012
    Location
    Beverly Hills
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    Default

    I thought I got it. Wire all low beams together. Do nothing to the high beam wiring.


    Gil and Durlene
    2003 H-3 Hoffman Conversion

  7. #7
    Join Date
    Jun 2017
    Location
    Russellville
    Posts
    33

    Default

    Thanks Gil

  8. #8
    Join Date
    Jan 2017
    Location
    Edmonton
    Posts
    93

    Default

    Just install the new DOT approved headlight from JW speaker, local KW dealers stock them. I installed them and I can't believe how good they are. We are using them in our commercial trucks as well as it is a huge improvment in saftey. Great product, worth every penny!

    They even have heated and none heated models with automatic temp controller.

    https://www.jwspeaker.com/

  9. #9
    Join Date
    May 2012
    Location
    Beverly Hills
    Posts
    3,216

    Default

    JW Speakers makes great lights!


    Gil and Durlene
    2003 H-3 Hoffman Conversion

  10. #10
    Join Date
    Aug 2018
    Location
    Myakka City
    Posts
    46

    Default

    I second the JW Speaker lights on older coaches with 4x6. I can now see at night

    2001 h3-45

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