Troubleshoot Marine Tachometer

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  • Sailor

    Master
    Rating - 100%
    19   0   0
    May 5, 2008
    3,716
    48
    Fort Wayne
    I have a Mercruiser 3.0 1995. Last weekend the Tach started jumping all around. No change at all in engine RPM, or performance.

    How do I troubleshoot this? Gauge? Connections, wiring?
     
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