| Pin | Type | Description / Signal type | Connection /
Measuring notes |
|---|
| 1 | E | RH rear loudspeaker ground control | Radio |
| | | |
| 2 | E | RH rear loudspeaker voltage control | Radio |
| | | |
| 3 | E | LH rear loudspeaker voltage control | Radio |
| | | |
| 4 | E | LH rear loudspeaker ground control | Radio |
| | | |
| 5 | | Not used | |
| | | |
| 6 | | Not used | |
| | | |
| 7 | | Not used | |
| | | |
| 8 | A | RH front medium-range speaker voltage control | Right front speaker |
| | | |
| 9 | A | RH front medium-range speaker ground control | Right front speaker |
| | | |
| 10 | A | Positive activation, rear left medium-range speaker/tweeter | Subwoofer speaker |
| | | |
| 11 | A | Negative activation, rear left medium-range speaker/tweeter | Subwoofer speaker |
| | | |
| 12 | A | Positive activation, rear right medium-range speaker/tweeter | Subwoofer speaker |
| | | |
| 13 | A | Negative activation, rear right medium-range speaker/tweeter | Subwoofer speaker |
| | | |
| 14 | E | RH front loudspeaker ground control | Radio |
| | | |
| 15 | E | RH front loudspeaker voltage control | Radio |
| | | |
| 16 | E | LH front loudspeaker voltage control | Radio |
| | | |
| 17 | E | LH front loudspeaker ground control | Radio |
| | | |
| 18 | | Not used | |
| | | |
| 19 | | Not used | |
| | | |
| 20 | | Not used | |
| | | |
| 21 | A | LH front tweeter voltage control | Left front speaker |
| | | |
| 22 | A | LH front tweeter ground control | Left front speaker |
| | | |
| 23 | A | RH front tweeter voltage control | Right front speaker |
| | | |
| 24 | A | RH front tweeter ground control | Right front speaker |
| | | |
| 25 | A | Left front mid-range speaker voltage control | Left front speaker |
| | | |
| 26 | A | Left front mid-range speaker ground control | Left front speaker |
| | | |