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TRX250r cdi and wiring question
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Posted by: Renato250r

I have an 87 trx250r, I need a new wiring harness but they only sell 88 and 89 now at the dealers. Can I use an 88 wiring harness with my 87 cdi? The cdi part numbers are different for the 87 and 88 so I don tknow if I will need a new cdi. ALso if it will work will I need to change anything?
thanks

Posted by: D Bergstrom

Use the 88 harness. I have a 88 harness on my 86 250R, works just fine, everything plugged right in. If you use the 89, you will have to change one of the stator connectors.

Doug

Posted by: wilkin250r

It's the same basic harness, and same basic colors, and any of them will only need slight modifications to fit any other year.

I can't remember which year they started the key switch. I know the 86 didn't have a key, but can't remember if it's 87 or 88 they added it.

The plug types for the stator connections change a little, but I think it's the same wire colors. If necessary, you could just clip those connections and replace them with any style of your choosing. I would suggest something water-repellant.

If memory serves, I believe all the CDI connections are exactly the same, but I would double-check with a second source.