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Being confined to the farm with the corona virus pandemic, I have started working on long abandoned projects.  I have a 95 Yamaha Moto 4 350 and the CDI box went bad (I think).  Finally broke down and spent the money for a new one.  It had the same part number as the old one, but the old box as 2 extra wires on the pig tail and not all the wire colors with the new box match the old box, so I'm not sure how to hook it up.  Have searched the internet on and off for some time but can't seem to find anyone who can help.  Does anyone out there know enough that they would try to help me?

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Does the colors match up. They may be in the wrong spot on the plug


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Does the colors match up. They may be in the wrong spot on the plug


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You may have to switch plugs.


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I'm not sure if the same CDI was used the entire run between 87 and 95, but I know the early Moto 4 CDI's were actually the CDI used on the last year of the 3 wheeler.  It was unlike the rest of the Yamaha quad line and is quite an oddity.

Do the 2 extra wires connect to wires in the harness?  Or do they connect to blank spots on the plug?

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If everything else matches. Then move those off to the side. What I would do is remove the pins out of the plug. This can be done with a pick. Something small enough to get the tab to move to pull it out. Then connect said matching colors. There should be 2 wires of the same color left. Do you know what machine the new one came out of? If so get that diagram and your diagram and match them up


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I had to do this with my “ death trap kx 250”


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Personally if i broke down and spent the money on a cdi it damn well better be the right one! Plug and play...... what year is your machine and what did you buy? Oem or aftermarket? Id it possible they sent you or you ordered the wrong part? 
 

The last thing one would want to do is start chopping up a harness after spending money on a cdi.  
 

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