Originally Posted by J. Dub
Kioko, how did you hook this up to your stock headunit?
OR did you get an aftermarket unit in there some how?
I took my car to a JL Signature dealer and they did all of the work and subwoofer enclosure fabrication. The headunit is 100% stock BMW and mates perfectly with the rest of the components. I didn't even need the JL Clean Sweep. The only extra thing I added was a bass gain knob.