Headlight Low Beam Issue

Discussion in 'Bonneville' started by Sam Wells, Nov 18, 2023.

  1. Sam Wells

    Sam Wells Well-Known Member

    Apr 2, 2022
    20
    53
    Bristol
    #1 Sam Wells, Nov 18, 2023
    I have just been out in the dark on my street twin, and on low beam the visibility was zero! The lower bulb was illuminated but giving no light on the road, so I had to ride on full beam which was annoying oncoming cars ( understandably)
    Does anyone have any ideas?
    My rides up to now have been in the daylight so I don’t know if this is how it has always been!
    Thank you.
     
  2. Pegscraper

    Pegscraper Elite Member

    Jun 12, 2020
    3,504
    800
    Yorkshire
    #2 Pegscraper, Nov 18, 2023
    I have a Street Scrambler which I believe has the same headlight. Sounds like the low beam filament in the H4 bulb may have gone. The "lower bulb" in the headlight is just a low power side/marker light and not meant to throw any appreciable light forwards.I fitted a LED H4 bulb which certainly improved lighting power.
     
  3. Sam Wells

    Sam Wells Well-Known Member

    Apr 2, 2022
    20
    53
    Bristol
    #3 Sam Wells, Nov 18, 2023
    Thank you, that all makes sense. I’ll look out for an led H4 bulb.
     
  4. Sam Wells

    Sam Wells Well-Known Member

    Apr 2, 2022
    20
    53
    Bristol
    #4 Sam Wells, Nov 18, 2023
    Can I ask where you went for the LED bulb, and did you change just the one or both bulbs?
     
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