A connector
| Pin Number  | 
			Description | 
|---|---|
| 2 | Right front speaker (+) (not with BOSE) | 
| 3 | Left front speaker (+) (not with BOSE) | 
| 6 | Right front speaker (-) (not with BOSE) | 
| 7 | Left front speaker (-) (not with BOSE) | 
| 9 | CAN-Bus High (Infotainment) | 
| 10 | CAN-Bus Low (Infotainment) | 
| 11 | NF mute from preliminary setup for cell phone preparation | 
| 12 | Terminal 31 | 
| 13 | Positive switched to Amplifier/Woofer (in left rear luggage compartment) / Amplifier R12 | 
| 15 | Terminal 30 | 
| 16 | Permanent positive connected with PIN 15 (anti-theft warning system) | 
B connector (blue)
| Pin Number  | 
			Description | 
|---|---|
| 2 | CD ground to CD Changer | 
| 4 | Permanent positive to CD Changer | 
| 5 | BOSE coding to ground (only with BOSE) | 
| 6 | CD data out to CD Changer | 
| 8 | Left signal from CD Changer | 
| 9 | Right signal from CD Changer | 
| 10 | Positive switched to CD Changer | 
| 11 | CD data in from CD Changer | 
| 12 | CD CLK from CD Changer | 
C connector
| Pin Number  | 
			Description | 
|---|---|
| 3 | Left front signal to Amplifier (only with BOSE) | 
| 5 | Left rear signal to Amplifier/Woofer (in left rear luggage compartment) / Amplifier | 
| 6 | NF (-) from Telephone Transceiver/preliminary setup for cell phone package | 
| 8 | Signal ground to Amplifier/Woofer (in left rear luggage compartment) / Amplifier | 
| 9 | Right front signal to Amplifier (only with BOSE) | 
| 11 | Right rear signal to Amplifier/Woofer (in left rear luggage compartment) / Amplifier | 
| 12 | NF (+) from Telephone Transceiver /preliminary setup for cell phone package | 



