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I also have the "basic" sound system, and would like to upgrade OEM look.
I have the professional radio, so i think i have the CAN BUS cable system.
Also interested in this one.
Can anyone tell, besides from having to cut and paste, to actually fit the rear speakers in place, why will be a problem to order all the cables from the HIFI or PRO Hifi system and make it work?
Not being possible, would it be possible just to upgrade with the front tweeters? I also had in the past an E87, and many people did this, as it made quite a difference.
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