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  1. S650 Aftermarket Sound System

    Replaced the rear deck speakers this weekend. Purchased replacements from Crutchfield using 2023 Mustang recommendations which were 6 1/2 inch that fit fine. Kit from Crutchfield included wire adapters (Metra 72-5602). The included wire adapters fit the existing connectors in the car...

  2. S650 Aftermarket Sound System

    Thanks for posting this. I haven't been able to find a wiring diagram yet specific to the s650. Any idea what that other twisted pair is to? The Grey/Orange Purple/Orange one?


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