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  1. J

    Ignition sensor ohms test

    Has anyone tested an ignition sensor a Thunderbolt IV? What is the ohms reading for a good working sensor? My specific boat is a 1988 Mercruiser 5.7 Thunderbolt IV. My original sensor reads very high, and my ordered-from-Amazon sensor also reads very high. Maybe it’s doa, or my meter is not...
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