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Wiring problem tacho NC30

Discussion in 'Technical and Troubleshooting Torque' started by Azzab, Jul 24, 2013.

  1. I posted on 400greybike while ago that my tacho was running at half speed. A few people suggested (based on the pics) that it was a RVF tacho. I've since ordered one from the wreckers and it arrived on Friday.

    Problem is the wires dont add up. Each seem to have a black/green combo which is the earth/ground.

    But the RVF tacho just had one yellow with green stripe wire connected from the back to the bike. The NEW tacho has a connection with a yellow/green stripe wire and a brown wire coming from it. I have cut the connection and tried to wire them independantly to the bike's lone yellow/green stripe wire to no avail.

    Ive done some searching on google but again no luck. Can anyone help pls?
  2. #2 cjvfr, Jul 24, 2013
    Last edited: Jul 24, 2013
    Wiring Diagram says
    Plain Green is the Earth and should go to the frame/battery neg.
    Yellow/Green is the Pulse and should run away to the ICU
    Black/Yellow is Positive and should come from the switched positive of the bike.

    That's the racing loom but the street one should e similar. I would guess the one you have the Yellow/Green is the pulse, the brown is Positive and the frame of the Tacho is the Ground. Just a guess, any smoke and sparks are your problem ;)