1987 Rectifier question.
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Thread: 1987 Rectifier question.

  1. #1
    Senior Member GOF's Avatar
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    1987 Rectifier question.

    While I had the old girl fired up today I had a volt meter on the battery. It never showed anything over battery voltage. Not that I ran it very long. I followed the diagnostic flow chart for charging system diagnosis. Looks to be the regulator/rectifier. As I am trying to keep the costs down until I know it will live I would like to avoid spending over a hundred bucks on a new OE part. So the question is, will the '88 and newer part fit the earlier setup?
    jtomelliott49 likes this.
    1988 Suzuki Savage
    1987 Yamaha TW200

  2. #2
    Senior Member SportsterDoc's Avatar
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    I do not have direct knowledge, but looking on line I found three different fitments:
    1987
    1988-2000
    2001 up

    Maybe you will better response in the morning

    Stator resistance good? Not grounded?
    2014 Honda CB1100
    2018 Yamaha XT250
    2016 Moto Guzzi V7 II
    2017 Yamaha TW200
    2012 Triumph Bonneville
    2002 H-D Sportster 1200 Sport
    2003 H-D Sportster 883
    1976 Honda CB750F
    1975 Honda CB360
    1970 Yamaha CT1
    1972 Yamaha CT2
    1972 Yamaha AT2/CT2
    1970 Honda SL350
    1970 Honda CL350
    1967 Honda CL160
    1967 Honda CB160
    1962 Honda CA110

  3. #3
    Senior Member Badgerflorida's Avatar
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    I’ve never owned an 87, so you might want to wait for 87 owners to chime in.

    Amazon has a cheapo version that is advertised as 1987 model. They list the same part # as Partzilla. It has a 4 wide connector vs the 2 X 2 connector on 1988+ models. See what connector your bike has. Use caution because the 87s have electrical systems unique to that model year only.

    https://www.amazon.com/Electrical-AY...ords=regulator

    Cheers and good luck. That didn’t take you long to get it running.
    01 street 203/204
    96 hybrid Shinko 241/428
    89 restored SOLD

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  5. #4
    Senior Member GOF's Avatar
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    Thanks guys. I know the 87 has a different electrical system. That's where the questions come in. According to the manual and my meter the stator passes inspection. I've seen a couple different units advertised for the 87 and up. But not sure I can trust that because of the different stator. Was hoping someone with more knowledge on the subject that I would have an answer. Still looking around trying to find an answer.
    1988 Suzuki Savage
    1987 Yamaha TW200

  6. #5
    Senior Member SportsterDoc's Avatar
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    I think BadgerFlorida covered it.
    1987 has a smaller unit, appears to be different mount and has a different connector.
    Looking on-line, most have photos to compare.

    Based on this, an 87 is the choice.

    If you were to bypass the connector and mounting differences, the internals are likely different.
    I would not want to chance frying a stator or burning out bulbs.

    You many still get a forum member with an 87 for more insight, so that is just my logic for now
    2014 Honda CB1100
    2018 Yamaha XT250
    2016 Moto Guzzi V7 II
    2017 Yamaha TW200
    2012 Triumph Bonneville
    2002 H-D Sportster 1200 Sport
    2003 H-D Sportster 883
    1976 Honda CB750F
    1975 Honda CB360
    1970 Yamaha CT1
    1972 Yamaha CT2
    1972 Yamaha AT2/CT2
    1970 Honda SL350
    1970 Honda CL350
    1967 Honda CL160
    1967 Honda CB160
    1962 Honda CA110

  7. #6
    Senior Member jtomelliott49's Avatar
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    I have an '87, but don't know the answer. Sorry.
    Tom in Wichita

    78 Moto Guzzi SP1000
    87 Yamaha TW200
    99 Yamaha TW200
    03 Honda Shadow Spirit (girlfriend's ride)
    74 Moto Guzzi Eldorado Police model (in many pieces)

  8. #7
    Senior Member GOF's Avatar
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    If and when I figure it out I'll let you know.
    1988 Suzuki Savage
    1987 Yamaha TW200

  9. #8
    Senior Member SportsterDoc's Avatar
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    Does yours look like this?
    1987 regulator.jpg

    Or does it look like this (1988-2000)
    1988-2000 regulator.jpg

    Or does it look like this (2001 up)?
    2001 up regulator.jpg
    Last edited by SportsterDoc; 01-14-2019 at 11:58 PM.
    admiral and JerseyJeeper like this.
    2014 Honda CB1100
    2018 Yamaha XT250
    2016 Moto Guzzi V7 II
    2017 Yamaha TW200
    2012 Triumph Bonneville
    2002 H-D Sportster 1200 Sport
    2003 H-D Sportster 883
    1976 Honda CB750F
    1975 Honda CB360
    1970 Yamaha CT1
    1972 Yamaha CT2
    1972 Yamaha AT2/CT2
    1970 Honda SL350
    1970 Honda CL350
    1967 Honda CL160
    1967 Honda CB160
    1962 Honda CA110

  10. #9
    Senior Member GOF's Avatar
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    It doesn't look like any of those.
    Attached Images Attached Images
    1988 Suzuki Savage
    1987 Yamaha TW200

  11. #10
    Senior Member SportsterDoc's Avatar
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    Well, it appears to have four spade blades in parallel, but the width of the 7 cooling fins may differ.

    Looks the same as the one in this thread, although a photo from the connector end of yours should assist verifying.

    https://www.tw200forum.com/forum/tec...ring-help.html

    It certainly is not compatible with 1988-2000, nor 2001 to current.

    Therefore you have at least three options:

    1. Purchase an aftermarket from ebay/Amazon for about $30

    https://www.ebay.com/i/362034293612?chn=ps

    2. Purchase a genuine Yamaha part from Partzilla for $111.29

    https://www.partzilla.com/product/ya...KH-81960-00-00

    3. Purchase one from a dealer for $168.99 1KH-81960-00-00 superseded by 2JA-81960-A0-00
    Last edited by SportsterDoc; 01-15-2019 at 04:19 PM.
    Badgerflorida likes this.
    2014 Honda CB1100
    2018 Yamaha XT250
    2016 Moto Guzzi V7 II
    2017 Yamaha TW200
    2012 Triumph Bonneville
    2002 H-D Sportster 1200 Sport
    2003 H-D Sportster 883
    1976 Honda CB750F
    1975 Honda CB360
    1970 Yamaha CT1
    1972 Yamaha CT2
    1972 Yamaha AT2/CT2
    1970 Honda SL350
    1970 Honda CL350
    1967 Honda CL160
    1967 Honda CB160
    1962 Honda CA110

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