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#42158
Don
Participant

    US Member

    OK, well your GT150 has the 35 amp alternator, quick start, and SLOW, correct? If so, I think you have the wrong part number for the powerpack. 584044 is the pack for the 6/9 amp alternator models.
    The part number for the 35 amp models with quikstart/SLOW is: 583865 and marineengine.com has em in stock.
    http://www.marineengine.com/parts/johns … ion+System

    These systems changed a lot in those years, and I am assuming your model number is: J150STLES. Perhaps you have the standard model with the pack that is NLA though, but you mentioned it is a 1990 GT150