| Pin | A | B | C |
| 1 | Speed dependent volume control (GAL) | Right rear + | Connection |
| 2 | Not used | Right rear - | for Becker |
| 3 | Phone mute (ground to activate) | Right front + | CD changer |
| 4 | Constant 12V | Right front - | |
| 5 | Ant trig (12V when radio on) | Left front + | |
| 6 | Illumination | Left front - | |
| 7 | Ignition | Left rear + | |
| 8 | Ground | Left rear - |