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2002 Yamaha FX140 ECU wire harness question.

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  • 2002 Yamaha FX140 ECU wire harness question.

    I'm putting a new engine in my 2002 FX140 and the engine is a 2003 all the harness plugs are the same except the one for the ECU. The ECU plug is the same on the 2002 and 2003 except the 2003 has 5 extra wires. There is a gray 9 wire connector on the 2002 ECU harness and a black 16 pin connector on the 2003 with 14 wires. I only have the ECU for the 2002 motor will that work if I just swap out the harness with the 2003 machine ? I don't want to take a change on messing up the ECU. Does any one know were I can get the pin out of the ECU harness?


    Any Help would be much appreciated !

    Thanks!
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