hello
I have the base euro sound system in my e34 1989 525i and the sound is very bad. I was wondering if it's possible to install a Harmon Kardon system from an e60 or e46. is it possible?
Every components is vastly different and overall architecture of sound systems in those bmw is completely different as well. Upgrading your existing setup to better speakers, headunit, amplifier would be far more practical and cost effective.
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