1. The 6-meter BMW IS0 extension cable is suitable for the radio with Quadlock Connection. 2. This is a universal Quadlock extension cable for BMW vehicles with OEM Sat-Nav, audio connection located in the trunk. 3. It can be used for BMW E38, E39, E46, E53 with either 17 or 40 pin connection. 4. This cable is for factory radios that have DSP (Digital Sound Processing) buttons on it, or if your car has a digital system like"Harman Kardon" 5.If you did not purchase an SWTNVIN radio, please consult our customer service before purchasing this wiring harness to confirm compatibility. Thank you! PLEASE NOTICE: 1.This is a universal Quadlock extension cable for BMW vehicles with OEM Sat-Nav, audio connection located in the trunk.
2.It can be used for BMW E38, E39, E46, E53 with either 17 or 40 pin connection.
3.This cable is for factory radios that have DSP (Digital Sound Processing) buttons on it, or if your car has a digital system like"Harman Kardon".
4. If you did not purchase an SWTNVIN radio, please consult our customer service before purchasing this wiring harness to confirm compatibility. Thank you!