R1100gs hi beam won’t go off

Discussion in 'GS Boxers' started by Yellow Dog, Apr 23, 2019.

  1. Yellow Dog

    Yellow Dog Wanderer Supporter

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    On my great new 1996 r1100gs, the high beam began to stay on no matter the switch position today on the commute. It’s got PIAA lights tied to the high beam...they switch on and off fine. In the high beam switch position the light works as expected. When I switch to low beam then both filaments are lit and the high beam indicator on the dash stays on too. Does anybody have ideas about what’s going on?
    #1
  2. miker325

    miker325 Been here awhile

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    Do your PIAA lights go on automatically when the headlight is switched to high beam and off when the headlight is switched back to low beam, or do you have to activate and deactivate the PIAA lights with a separate switch? IF automatic, do they still go off when you switch the headlight to low beam, even though the high beam stays on?
    #2
  3. szurszewski

    szurszewski Long timer

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    This sounds like a common oilhead switch problem. The left switch cluster gets grimy inside and will do this. You can take it apart and clean it if it’s not too bad, but eventually the heat from the added resistance will melt things - then you need to replace.

    Google oilhead stuck on high beam
    #3
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  4. mouthfulloflake

    mouthfulloflake Not afraid

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    Cleaning the switch might
    Help

    All of the current the head light draws goes thru some small bronze contacts inside that switch

    Changing it out to a relay power feed with the oem switch as a trigger is a good low buck solution
    #4
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  5. Yellow Dog

    Yellow Dog Wanderer Supporter

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    They’ve got a switch, but go off automatically when I switch to low. I’ll check if they still do.
    #5
  6. Yellow Dog

    Yellow Dog Wanderer Supporter

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    Great! Is there a write up how to do that?
    #6
  7. Yellow Dog

    Yellow Dog Wanderer Supporter

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    So I checked and I can turn the PIAA’s on and off at their switch but they stay on regardless of headlight switch position
    #7
  8. miker325

    miker325 Been here awhile

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    Then I’d bet it’s the switch. Shouldn’t be hard to take a part and clean up.
    #8
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  9. mouthfulloflake

    mouthfulloflake Not afraid

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    I can try to give some guidance there YellowDog.

    Give me a nights rest, and let me try and put something coherent together for you brother.
    #9
  10. Yellow Dog

    Yellow Dog Wanderer Supporter

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    Thanks man...sleep tight
    #10
  11. clange95

    clange95 Adventurer

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    Word of warning...be careful taking the switch apart. I was slightly distracted by a pair of Mormon missionaries whilst disassembling the switch and it blew a zillion tiny springs and screws all over my driveway. I couldn't find all of them, so I had to order a whole replacement assembly off of eBay that cost me an arm and a leg.
    #11
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  12. pictish ratter

    pictish ratter Been here awhile

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    My R1100GS done that but it was the low setting that stopped working had to jam a piece of cable tie into the switch on the high setting so I had lights n till I got another switch ..the contacts had worn n melted a bit of the plastic switch,bought 2nd hand switch n it's been fine
    #12
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  13. nobbylon

    nobbylon Been here awhile

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    I suspect they are similar internals to the K bikes of early years. Here’s how I fixed one of my K100’s that had burnt out the contact.
    I used a brass screw and made a new contact with a dremel and small drills. Pushed the contact into place and added a little jb weld to keep it tight but in reality if you use the correct diameter screw it’s not needed.

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    #13
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  14. nobbylon

    nobbylon Been here awhile

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    Ps take the switch apart in a large plastic bag as there are springs and ball bearing in there.
    #14
  15. nobbylon

    nobbylon Been here awhile

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  16. Mugwest

    Mugwest .

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    :nod
    BTDT x 2. After the 2nd time (requiring a $brand new$ switch from MAX), i said "Never again!" and did it how the factory should have done it:
    :nod You can certainly homebrew it, but the best $60 you can spend gets you Jim's better-than-factory masterpiece:

    H4 Single Headlight Weatherproof Relay Kit (4th kit down): https://easternbeaver.com/Main/Wiring_Kits/H4_Kits/h4_kits.html

    Bulletproof, install-and-forget perfection on my rig for 5 or 6 years now.
    #16
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  17. Yellow Dog

    Yellow Dog Wanderer Supporter

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    #17
  18. Yellow Dog

    Yellow Dog Wanderer Supporter

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    Will do! I think I’m going to go take it apart right now.
    #18
  19. Yellow Dog

    Yellow Dog Wanderer Supporter

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    #19
  20. Yellow Dog

    Yellow Dog Wanderer Supporter

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    That’s a solid plan...with the EME switch and the relay I’m looking at 200 and change. I like it.
    #20