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m5 sports button wiring

  1. M5 sport button

    E39 M5 and E52 Z8 Discussion
    Hello everyone, I'm new to the group, and just wanted to pick someone's brain on the m5 sports button. I know what the button does but my question is more electrical. What I wanted to know is if there is a 12v signal wire behind in the wiring, so that when you push the button a wire gets 12v. I...