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Thread: /6 Clutch Switch and Neutral Switch issues

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  1. #1
    Superkraut typ181r90's Avatar
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    /6 Clutch Switch and Neutral Switch issues

    I replaced my neutral switch about 5 months ago (early type, old one was leaking badly) and the switch is broken as of yesterday. It only works randomly and not often and I isolated the problem at the switch since by bridging the wires I can get a neutral reading on the instrument pod. I just ordered another one and was wondering if anyone else has gotten these crappy new units or was it just a random bad one I got? I know Hucky's has an aftermarket brass alternative, but it's only for the newer type

    That leads me to my next question, along with a new neutral switch I also ordered a new clutch switch since the one on my bike exists by the clutch lever but there aren't any wires coming from it to the headlight shell, as if the PO broke a clip and then just removed the wire. I know how to replace the switch onto the left controls, but where in the headlight shell does the wire connection go to? I haven't been able to locate it in the various manuals, but maybe I just wasn't looking hard enough. I'm hoping I won't have to buy anything additional to put in the headlight shell. Any help would be appreciated
    // 1975 BMW R90/6 (cafe'd) // 1957 BMW R60 (in pieces) // 1967 Aermacchi/H-D Sprint 250 SS (custom special) // 1973 VW Type 181 Custom SOLD )

    http://symphonyofshrapnel.blogspot.com

  2. #2
    #4869 DennisDarrow's Avatar
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    Really NOT aware of the /5 or /6 having the clutch switch that disables the starter.... if not engaged. I could be very wrong and am sure if so will be corrected; but I remember being down at the "store" where all the locals hang out for coffee and thinking I was in neutral hit the starter button.....needless to stay the jump that the bike took with me holding the bar is still remembered vividly when I show up on the bike for my coffee and sausage biscuit.......God bless.......Dennis

  3. #3
    Superkraut typ181r90's Avatar
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    Quote Originally Posted by DennisDarrow View Post
    Really NOT aware of the /5 or /6 having the clutch switch that disables the starter.... if not engaged. I could be very wrong and am sure if so will be corrected; but I remember being down at the "store" where all the locals hang out for coffee and thinking I was in neutral hit the starter button.....needless to stay the jump that the bike took with me holding the bar is still remembered vividly when I show up on the bike for my coffee and sausage biscuit.......God bless.......Dennis
    Don't know about the /5, but my 75 /6 definitely has it. I just removed the actual switch from the bars, only thing I can't place is where the wiring connects in the headlight bucket
    // 1975 BMW R90/6 (cafe'd) // 1957 BMW R60 (in pieces) // 1967 Aermacchi/H-D Sprint 250 SS (custom special) // 1973 VW Type 181 Custom SOLD )

    http://symphonyofshrapnel.blogspot.com

  4. #4
    Monza Blue 1974 R90/6
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    I have a '74 /6 with the old style handlebar controls (small round knobs) with the clutch and brake switches that are like small tin cans covered by a rubber boot. Are your controls and switches the same; or, are they the later style?

    Here are some pictures of the two types of controls and switches (about half way down the page).

    http://www.bmwhucky.com/010061.html


    As you can see, on my bike, the two wires for the clutch switch split off the harness wires that go to the control (bright light and horn).

    I can look at where they connect on the board inside the headlight, if that would help you.

    Barron

  5. #5
    Monza Blue 1974 R90/6
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    One more thought - about the neutral switch in the transmission - is it possible that the switch isn't bad, but rather, it needs one more or one less spacer?

    I'm thinking it might be just on the edge of being adjusted properly, either too far in, or not in far enough, but just enough that it operates intermittently.

    Barron

  6. #6
    Superkraut typ181r90's Avatar
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    My controls are the newer type and use the clutch switch 61 31 1 243 403 (pictured below the controls on hucky's). I can see that there's a brown + brown/yellow wire coming off it into a single connection with a horizontal and vertical terminal, but can't seem to find anywhere in the headlight shell to make that connection. Maybe I can cut that single connection and just plug the wires into their respective terminals on the board if I can't find that corresponding female connection?

    The problem with the neutral switch at the trans was that it was working fine, it is now leaking like a sieve and I'm wondering if that is messing up the internal connection somehow. This wasn't apparent yesterday, but the pool of gear oil on my garage floor this afternoon tipped me off :-/. Funny thing is I used the JB Weld trick on this one before I put it in, but I suppose I didn't get enough coverage.
    Last edited by Typ181R90; 09-06-2012 at 01:41 AM.
    // 1975 BMW R90/6 (cafe'd) // 1957 BMW R60 (in pieces) // 1967 Aermacchi/H-D Sprint 250 SS (custom special) // 1973 VW Type 181 Custom SOLD )

    http://symphonyofshrapnel.blogspot.com

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