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  1. #1
    Registered User beano08's Avatar
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    Intermittent dash lights

    Boy, I hope I'm not wearing out my welcome here. But I'm having an issue with my dash lights. If you recognize my handle, I just replaced my rotor. Everything seems to be fine in that regard. I had this issue before I took things apart. I know there's a crack in the wire running to the neutral switch. The neutral light had been intermittent since I got the bike. Could this cracked wire cause the dash to go out? I was freaked out to see the gen light glow dimly but it went out went I put the bike into gear. Does this make sense to anyone?

    Thanks!

  2. #2
    Registered User lmo1131's Avatar
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    Sorry to say, I don't recognize your handle, why don't you put the model/year of bike you have in your signature line for us?

    If the generator like goes out when you put the bike in gear, do you suppose that you might have the two wire switched somewhere?
    "It is what you discover, after you know it all, that counts." _ John Wooden
    Lew Morris
    1973 R75/5 - original owner
    1963 Dnepr

  3. #3
    Registered User beano08's Avatar
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    I think that's better. When the lights are operating properly everything is hunky dory. My first post was on an iPad, maybe it was unclear. Basically I'm wondering if a bad neutral switch wire (I know for sure the wire is bad) can cause all idiot lights to be out. Come to think of it, this started after I was playing with the wire trying to get the neutral light to work, which it did.
    "Three passions, simple but overwhelmingly strong, have governed my life: the longing for love, the search for knowledge, and unbearable pity for the suffering of mankind."
    1976 R75

  4. #4
    Heartbeat of my R100GS Guenther's Avatar
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    It could be a mechanical problem with the neutral switch.

    With ignition off and in neutral wiggle the shift lever a bit without changing gear. Again do this test in 1st and 2nd gear. Does the neutral light flicker while you are doing that?

    If so the switch might be failing or, the washer under the switch has an incorrect thickness thus not giving a solid on/off.

    If this test doesn't show a failing neutral switch, check the two wires coming off the switch. One is directly connected typically to ground on the gearbox. The other one ends in a connection in the headlight bulb.

    /Guenther

    Edit: Thanks to James' reply a correction - the test should be done with ignition ON and motor NOT running!
    Last edited by Guenther; 10-30-2017 at 04:41 PM.

  5. #5
    Airmarshal-IL James.A's Avatar
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    Beano08, If I read your post correctly, you are wondering if a fault in the neutral light wiring will affect the other lighting and indicators in the instrument pod, yes? On a /6, I would say no, that circuit is dedicated to indicating that the transmission is in neutral. That is all it does. A wonky neutral light should not take out the other lights in the pod.

    I like Geunther's idea of of manipulating the wires with the motor not running to see what happens. If it were me, I would try it with the key turned to "lights on" but the ignition off.
    1973 R75/5

  6. #6
    Quote Originally Posted by beano08 View Post
    Boy, I hope I'm not wearing out my welcome here. But I'm having an issue with my dash lights. If you recognize my handle, I just replaced my rotor. Everything seems to be fine in that regard. I had this issue before I took things apart. I know there's a crack in the wire running to the neutral switch. The neutral light had been intermittent since I got the bike. Could this cracked wire cause the dash to go out? I was freaked out to see the gen light glow dimly but it went out went I put the bike into gear. Does this make sense to anyone?

    Thanks!
    When you replaced your rotor, did you unhook your negative battery cable before removing/installing the front cover? If not, you most likely shorted out the diode board. That can make your dash lights act wonky.
    Last edited by fxray; 10-31-2017 at 04:03 AM.

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