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Recent content by SugerShanks

  1. S

    Eliminating Thunderbolt IV

    Hello All, Newbie here with some general guidance needed. I tried to advance search several times but I'm probably missing someone else's post covering this. I have a '93 SeaRay 180 with the 4.3L Mercruiser engine, My thunderbolt IV ICM is no longer functional, power at the purple wire at the...
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