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82 xj650 Maxim headlight won't turn on.

Discussion in 'XJ Technical Chat' started by Losbos, Aug 21, 2017.

  1. Losbos

    Losbos New Member

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    Sorry if this has been posted before but I have a 1982 yamaha xj650 Maxim and the headlight won't turn on even with the bike started and running. It runs great and I have power to my brake light with the running light and brake light working. I have no idea where to start troubleshooting.
     
    Losbos, Aug 21, 2017
    #1
  2. Stumplifter

    Stumplifter Well-Known Member

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    Check for continuity on the headlight?

    Sit tight there are real electrical wizards here that will offer better advice...
     
    Stumplifter, Aug 21, 2017
    #2
  3. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    I'd start by pulling the headlight and seeing if it isn't just burnt out. You can check for 12 volts at the socket while you're in there.
     
    k-moe, Aug 21, 2017
    #3
  4. XJ550H

    XJ550H Well-Known Member Premium Member

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    check voltage both sides of fuse
    and as suggested at headlight connector
    ohm out the bulb 1 common blade to high blade then to low blade.
     
    XJ550H, Aug 21, 2017
    #4
  5. Pyromjs

    Pyromjs New Member

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    Not sure if that model has a reserve lighting unit but if it does then I'd check for power in and power out my 82 maxim 1100 had a bad one.
     
    Pyromjs, Sep 6, 2017
    #5
  6. jayrodoh

    jayrodoh YimYam

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    No reserve lighting on that bike.

    Do the gauges light up once started? If they do, then check the headlightbulb first as kmoe suggested. Next check the headlight fuse. That model has a headlight relay under the left side cover too that may have failed.

    Here is the wiring diagram with the headlight circuit isolated.

    HL.png
     
    jayrodoh, Sep 6, 2017
    #6
  7. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    Blown headlight, or a wire fell off
     
    hogfiddles, Sep 6, 2017
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  8. XJ550H

    XJ550H Well-Known Member Premium Member

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    bad relay ground?
    Bad relay ? remove it and test it. put 12 volts to tab hooked to black wire and tab to white wire. negative to black positive to white
    do cluster lights come on ? another indicator of relay problem.

    could be the white wire coming from alternator is disconnected/broken .
    check diode in diode block too. AC voltage running through that relay would not be a good thing

    just to add the running tail light and brake light are not included in the headlight system.
     
    XJ550H, Sep 6, 2017
    #8
    HolidaySeasonnnn likes this.

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