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    Alternator question

    on a 1999 MGM can you replace the 130 amp alternator with the 135 amp alternator? Are the plugs the same?

    #2
    1999 GMQ should be the 4G design with the D shaped plug. The 6G 135 amp unit uses its own unique plug. That said, you can change the connector and it’ll work fine. Everything physically fits the same. I’ve done a similar swap on my ‘97 from the 3G to the 6G with no issues.

    My Cars:
    -1964 Comet 202 (116K Miles) - Long Term Project
    -1986 Dodge D-150 Royale SE (112K Miles) - Slowly Getting Put Back Together
    -1987 Grand Marquis Colony Park LS (325K Miles) - April 2017 + September 2019 POTM Winner
    -1997 Grand Marquis LS (240K Miles) - The Daily Workhorse & March 2015 + January 2019 POTM Winner

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