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Head lamp set up

Discussion in 'General Electronics Discussion' started by ravi persaud, Dec 19, 2017.

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  1. ravi persaud

    ravi persaud

    1
    0
    Dec 19, 2017
    hey guys when hooking up a halogen bulb does both filaments illuminate when switching to high beams or are they illuminated separately for both circuits(high/low beams) and is there a pin out circuit
     
  2. hevans1944

    hevans1944 Hop - AC8NS

    4,615
    2,154
    Jun 21, 2012
    Depends on the automobile manufacturer. I have seen it done both ways. My 2002 Ford Taurus Station Wagon illuminates the two filaments separately for low-beam and high-beam, but under certain circumstances will illuminate both filaments simultaneously. Suggest you check with a multimeter to determine what you have.
     
  3. kellys_eye

    kellys_eye

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    1,147
    Jun 25, 2010
    The bulb will have two pins plus a metal body, the body being common to the two filaments.

    ISTR the only difference is the position of the filaments such that the high beam filament is at a different focal point of the headlight envelope/reflector.

    Accordingly it doesn't really matter if they are both lit as it is the 'direction' of the beam rather than its intensity that is the issue.
     
  4. debe

    debe

    269
    71
    Oct 15, 2011
    If its one of these Headlamp globes, then heres the pin conections. HL-1.JPG HL-2.JPG
     
  5. Audioguru

    Audioguru

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    731
    Sep 24, 2016
    I see most cars today have 4 front lights. The low beams are near the outside and the high beams are nearer the middle.
    Many drivers do not know anything about high beams because they drive day and night with the high beams on. Other drivers do not know that daytime running lights are usually dimmed and some are high beams at full blast shining straight ahead (blinding oncoming drivers) but not shining on the road. They cannot see anything on the road at night that might be a child, animal or dangerous obstruction. With only daytime running lights they do not know there is no light at the rear of their car.
     
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