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Thread: 96 TW200 Electrical Question

  1. #11
    Senior Member GaryL's Avatar
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    Quote Originally Posted by Purple View Post
    Although – having said that ……

    I can’t see that Yamaha would have changed the loom around that much for the home market – I always figured that after 2001, they changed it to the switch rather than the magneto to account for front visibility when you were at a stop light with the engine off

    Perhaps someone else could chime in at this point ?
    Not to argue because you could have a EU model which could be different. I have owned 1987, 1988, 1991, 2001, 2006 and 2009 TWs and only the 87 didn't turn the headlights on when the key was in the on position. This could be an American thing because the law requires the headlight to be on while driving a MC so they make it idiot proof. 1987 had it's own electrical system I do believe required the magneto to run any electronics. After 1987 if you drove your bike into the garage and put the kick stand down while in gear the engine quit but the lights remain on until you turn the key off. If you shift into neutral then the engine can stay running with the stand down.

    GaryL
    Purple and jtomelliott49 like this.
    Since light travels faster than sound, some people appear bright until you hear them speak.
    If I agreed with you, we'd both be wrong.

    2006 TW200
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  2. #12
    Senior Member JerseyJeeper's Avatar
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    Quote Originally Posted by Purple View Post
    Whoops .....
    The 87 has an AC magneto coil driving the headlight which is only on when the engine is running (or someone is spinning the magneto very fast by hand)..

    Purple, not sure if your "whoops" means your bikes headlight actually comes on with the key or not. If it does not please confirm the year of the bike and tell me the color of the wires going to the rectifier regulator? Are there 3 white and one red wire - or are they: white, yellow, brown and red? I have a few conflicting schematics I'm trying to associate to the correct year bike. Thanks... (if you don't have the time no problem..
    jtomelliott49 likes this.
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  3. #13
    Senior Member GaryL's Avatar
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    Quote Originally Posted by JerseyJeeper View Post
    The 87 has an AC magneto coil driving the headlight which is only on when the engine is running (or someone is spinning the magneto very fast by hand)..

    Purple, not sure if your "whoops" means your bikes headlight actually comes on with the key or not. If it does not please confirm the year of the bike and tell me the color of the wires going to the rectifier regulator? Are there 3 white and one red wire - or are they: white, yellow, brown and red? I have a few conflicting schematics I'm trying to associate to the correct year bike. Thanks... (if you don't have the time no problem..
    JJ, do not rely on what Purple's bike has until we confirm if the Japan/EU models are in fact different. I can confirm the 1987 do not come on with just the key and all the ones after 2001 do come on with the key. Where the issue seems to be is the bikes between 1988 and 2001. For the sake of argument let us consider the 1987 bikes as Generation 1 and the 1988-2000 as Generation 2 and all newer ones as Gen 3. All of my 1988-2000- Gen 2 bikes turned the front headlight and blinker primary lights on with the key but evidently the Japan/EU models do not.

    Another way to research this would be in the wiring harness part numbers. The only way to change the headlight function is by changing the harness and if those numbers change at some point or from US to the Japan/EU models then there is the answer. It is not rocket science but it is electrical science and I suck at both. With a real HS internet connection I could do the research myself but where I live remains in the 20th century as far as internet goes.

    GaryL
    jtomelliott49 likes this.
    Since light travels faster than sound, some people appear bright until you hear them speak.
    If I agreed with you, we'd both be wrong.

    2006 TW200
    2006 XT225
    Kubota BX2370 Subcompact tractor with snow blower
    Wilderness System Ride 115 fishing Kayaks
    1974 Boston Whaler Montauk
    1989 Lowe Lunker

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  5. #14
    Super Moderator Purple's Avatar
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    JJ - "whoops" means I posted confusing info - but my Japanese market '98 headlight comes on with the engine, and not with the key .......
    (Warning - Forum may contain nuts) ...... Hidden Content

    TW200 - 1998 - Japanese import - 5000 miles on the clock - TW225 Special Edition 2007

  6. #15
    Senior Member GaryL's Avatar
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    Quote Originally Posted by Purple View Post
    JJ - "whoops" means I posted confusing info - but my Japanese market '98 headlight comes on with the engine, and not with the key .......
    That is interesting and good to know Purple. I wonder if the part number for the wiring harness is different for your Japan model than it is for our US models? The US part number is 2YG-82590-10-00. I have no idea how to find the number for your side of the pond.

    GaryL
    Since light travels faster than sound, some people appear bright until you hear them speak.
    If I agreed with you, we'd both be wrong.

    2006 TW200
    2006 XT225
    Kubota BX2370 Subcompact tractor with snow blower
    Wilderness System Ride 115 fishing Kayaks
    1974 Boston Whaler Montauk
    1989 Lowe Lunker

  7. #16
    Senior Member fishguy's Avatar
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    1995 TW non-Calif model. Key on, engine off, headlight on. All other lights on also.
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  8. #17
    Senior Member jtstdub's Avatar
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    Quote Originally Posted by Purple View Post
    Although – having said that ……

    I can’t see that Yamaha would have changed the loom around that much for the home market – I always figured that after 2001, they changed it to the switch rather than the magneto to account for front visibility when you were at a stop light with the engine off

    Perhaps someone else could chime in at this point ?
    M 03 works this way.... Ignition on=head light on!

    Jim
    Purple likes this.
    Hidden Content 2003 Tw200, 2014 BWS 150, 1969 VW Beetle Baja, 1972 Super Beetle and a 1987 Suzuki Samurai.

  9. #18
    Senior Member scotti158's Avatar
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    My '96 headlight comes on with the key on also.
    2013 Yamaha TW200

    1996 Yamaha TW200

    1995 Kawasaki KLR650

    2002 Yamaha RoadStar 1600 with sidecar

  10. #19
    Senior Member GaryL's Avatar
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    Seems the US bikes from 1988 right through the present all turn the headlight, front markers and tail lights on with just the key on and engine Not running. Evidently the EU/Japan models do not which tells us they probably have a different part number for the wiring harness. I tried a bunch today but I can't seem to bring up any of the EU/Japan parts diagrams to even do the research. Come on Purple, our US part number for our 1998 harness is 2YG-82590-10-00, Look it up on your end and let us know why your lights stay off when the key is turned on but no engine running.

    GaryL
    littletommy likes this.
    Since light travels faster than sound, some people appear bright until you hear them speak.
    If I agreed with you, we'd both be wrong.

    2006 TW200
    2006 XT225
    Kubota BX2370 Subcompact tractor with snow blower
    Wilderness System Ride 115 fishing Kayaks
    1974 Boston Whaler Montauk
    1989 Lowe Lunker

  11. #20
    Senior Member scotti158's Avatar
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    Quote Originally Posted by GaryL View Post
    Seems the US bikes from 1988 right through the present all turn the headlight, front markers and tail lights on with just the key on and engine Not running. Evidently the EU/Japan models do not which tells us they probably have a different part number for the wiring harness. I tried a bunch today but I can't seem to bring up any of the EU/Japan parts diagrams to even do the research. Come on Purple, our US part number for our 1998 harness is 2YG-82590-10-00, Look it up on your end and let us know why your lights stay off when the key is turned on but no engine running.

    GaryL
    My guess is an extra relay triggered by charging system output with "jumper" so headlight stays on if the engine stalls after initial start up.
    2013 Yamaha TW200

    1996 Yamaha TW200

    1995 Kawasaki KLR650

    2002 Yamaha RoadStar 1600 with sidecar

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