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  1. How to Enable Heated/Cooled Seats - All Models

    Wanted to add this. To anyone installing 2018 + seats in a 2021, 300a car, and looking for OB2 plug with corresponding can bus + & - . As for what EricV2003 mentioned, I can confirm all the wiring is accurate on 2018+ cars and seats. Only need to jump the power and ground and wire up the harness...