Originally Posted by 335IConvertible2011
I just purchased the BTA8100 8inch Powered subwoofer with installation kit for my BMW 335i convertible. I have stock radio with Nav. Do you have the wiring schematics for this vehicle? I need to know where the wires are that I need to tap. Thank you in advance..
Contact the dealership or a professional installer for assistance with identifying the correct harness and wires. A professional installer will also be able to tell you if you will need to purchase an LOC as well.