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stereo upgrade

  1. Upgrading to a BM53 radio from an existing BM53 not working

    E39 5 series Forum
    I recently purchased a 2002 M5 and I wanted to install AUX into it. The current BM53 was not aux ready because it was too old and did not support it. I purchased a unit that is aux compatible and plugged everything in and it does not work. I messaged the seller on ebay and asked him about it and...
  2. Media Overhaul Questions

    E39 M5 and E52 Z8 Discussion
    Hello all -- this is my first question on the forum as I just picked up my '03 in August! With Christmas rolling around, I am looking to treat myself to a complete media overhaul. I am definitely replacing my Nav unit with a Dynavin. I am also looking to change out the speakers, dsp amp, and...
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