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Yamaha Tech Originally the Yamaha XT600 Tech Forum, due to demand it now includes all Yamaha's technical / mechanical / repair / preparation questions.
Photo by Sean Howman, The Pamir highway in an unseasonably cold late October, Tajikistan

I haven't been everywhere...
but it's on my list!


Photo by Sean Howman,
The Pamir highway in an unseasonably
cold late October, Tajikistan



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  #1  
Old 8 Dec 2008
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Alternating
Hi, I bought an alternator stator for my '86 1VJ and it only has three wires coming out of it (all the same colour) Is this correct? I thought there were four connections to the rectifier. This is the second one I've bought and it's not funny any more.
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Old 8 Dec 2008
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Hej,

3 (all same colour) IN
1 (red) OUT

in total 4 connections - be happy!


hope that helps.

Uwe
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  #3  
Old 9 Dec 2008
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Actually there is a fifth connection - to battery negative. On yours this is via the bikes chassis. This is 'made' by one or more of the mounting screws and or the metal to metal contact between the rec/reg case and the frame. On some bikes there is a separate (usually black) wire to perform this connection.

But yes - most bike alternators have 3 wires .. and there is no electrical circuit difference between them so they can be connected anyway around. No point in having different colours on them. One failure mode is where the flexiable wire is slodered onto the stators less flexiable single core wire .. usually hidden inside some fiber tubing .. it fails by braking off - making an open circuit. If you can get to it you might make a temporary repair by soldering it back to gether and caoting it with araldite...
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Old 11 Dec 2008
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many thanks
Quote:
Originally Posted by bubbla View Post
Hej,

3 (all same colour) IN
1 (red) OUT

in total 4 connections - be happy!


hope that helps.

Uwe
Thanks very much for your help. have agood xmas mate.
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  #5  
Old 11 Dec 2008
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cheers
Quote:
Originally Posted by Frank Warner View Post
Actually there is a fifth connection - to battery negative. On yours this is via the bikes chassis. This is 'made' by one or more of the mounting screws and or the metal to metal contact between the rec/reg case and the frame. On some bikes there is a separate (usually black) wire to perform this connection.

But yes - most bike alternators have 3 wires .. and there is no electrical circuit difference between them so they can be connected anyway around. No point in having different colours on them. One failure mode is where the flexiable wire is slodered onto the stators less flexiable single core wire .. usually hidden inside some fiber tubing .. it fails by braking off - making an open circuit. If you can get to it you might make a temporary repair by soldering it back to gether and caoting it with araldite...
Cheers for that chief much apreciated.
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