Car Radio Bluetooth Music AUX Cable Handsfree Adapter Harness Kit for E60 E63 E90 E91 The Bluetooth module is designed for Z4. Simply plug the 16-pin connector into the socket on the back of the radio. You can plug this into the rear radio, then connect the red wire to 12V+ and the black wire to 12V-. Pair your mobile phone with the Bluetooth module, then select Aux from the radio, and you can use the mobile phone to play music through the car speakers. You can listen to music from your phone or MP3 player (must have Bluetooth capability). Fitment: For E60: 5 Series: 525i, 525it, 528i, 528it, 530i, 530it, 540i, 540iT & M5 (Sedan and Touring) 2004–2010 For E63 and E64: 6 Series: 630Ci, 630i, 645ci, 650i, M6 (Coupe and Cabriolet/Convertible) 2003–2010 For E65 and E66: 735i, 735li, 740i, 740li, 745i, 745li, 750i, 750li, 760i, 760li (including diesel engine models) 2002–2008 Compatible with M-ASK, ASK-CD Suitable for 1 Series (E87, E88, E81, E82), 3 Series (E90, E91, E92) Suitable for 2004–2010 models Specifications: Voltage input: 5V–12V DC Working current: 600mA Standby current: 20mA DAC resolution: 20bit Harmonic distortion: 0.05% Signal to noise ratio: 90dB Frequency response: 20Hz–20kHz Working temperature: -35°C to +75°C Note: Includes microphone Color: Black Material: Plastic and electronic components Package Contents: 1 x Bluetooth adapter 1 x Microphone Note: Light and different display settings may cause slight color variation between the item in the picture and the actual product. Measurement may vary by +/- 1–3cm.