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  • Tach Troubles...

    TRYING to get my gauges hooked up 1985 Yamaha ETLK 90 HP...703 Control box...oil level gauge works...trim gauge works...no reading on Tach. Is it only the Green, Black & Yellow that runs to the Tack from the box or am I missing somthing???

  • #2
    The green wire is the tach sender lead and the pole setting for a 90HP is 12 pole. If the tach has no reading then it's a bad tach or alternator.
    Regards
    Boats.net
    Yamaha Outboard Parts

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