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  1. Anybody install an XTRONS head unit in their e39? I would like any advice or input

    E39 M5 and E52 Z8 Discussion
    Hi all, I recently purchased a new XTRONS PQ7939BIP head unit and am looking to swap it out for the stock head unit. See link: I have seen other threads discussing the installation of these android head units but wanted to see if...