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Old 07-21-2011, 11:32 AM
Porando Porando is offline
Officially Welcomed to the 'Fest
Location: South OC
 
Join Date: Jul 2011
Posts: 662
Mein Auto: 2011 335i, 2004 X5 4.4L
You need to pull this aftermarket stereo and check how they have connected it to the original BMW harness?
Good audio shops have special interface cabling which plugs into OEM and if it done that way - going back will be easy.
But some will cut/splice wires which will make it more difficult to go back w/o understanding how to do it...
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