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      05-15-2009, 09:39 AM   #4
strokeZ
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Drives: '11 e92 M3 6MT
Join Date: Mar 2009
Location: Houston, TX

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Have radio like urs. Picked up harness hooked it up and everything ran fine. You should not need to replace speakers. Make sure to search threads around this. Lots of opinions but I can tell you that if you have the business CD w no DSP then this will work (did for me). I have an amp in the rear but these amps can accept a hi power signal and then do all cross over functions. You need to keep the amp if you want radio broadcast (this is where the antenna electronics lie). On your after market, make sure to use the little black knob from teh back of your factory radio. It will make things more stable. Again, I used harness w new head unit and did not change speakers and it all works just fine. You do need to wire the remote on Blue wire on harness up to the remote wire from the HU.
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