| Number | X-pin, colour | Description | 
|---|---|---|
| X1312 | 18-pin, yellow | Plug connector Navigation control unit | 
| X1313 | 18-pin, blue | Plug connector Navigation control unit | 
| X01008 | 2-pin, metal | Plug connector Navigation control unit | 
| Pin | Type | Description / Signal type | Connection / Measuring notes  | 
|---|---|---|---|
| 1 | E | Reversing light signal | Light module | 
| 2 | Not used | ||
| 3 | E | Terminal R | Unloader relay terminal R | 
| 4 | Not used | ||
| 5 | Not used | ||
| 6 | Not used | ||
| 7 | Not used | ||
| 8 | Not used | ||
| 9 | Not used | ||
| 10 | E | Signal, left wheel speed | Connector, front left speed sensor | 
| 11 | Not used | ||
| 12 | A | Siemens internal | Basic interface, telephone | 
| 13 | A | Siemens internal | Basic interface, telephone | 
| 14 | A | Siemens internal | Basic interface, telephone | 
| 15 | M | Shield | Basic interface, telephone | 
| 16 | A | Siemens internal | Basic interface, telephone | 
| 17 | Not used | ||
| 18 | Not used | ||
| Pin | Type | Description / Signal type | Connection / Measuring notes  | 
|---|---|---|---|
| 1 | E | Voltage supply terminal 30 | Fuse F56 | 
| 2 | Not used | ||
| 3 | E/A | I-bus signal line | I-bus connector | 
| 4 | E | Navigation video signal, red | Video module | 
| 5 | Not used | ||
| 6 | Not used | ||
| 7 | Not used | ||
| 8 | E | Navigation video signal, green | Video module | 
| 9 | E | Audio signal AF+ | Radio | 
| 10 | M | Ground | Ground connector | 
| 11 | Not used | ||
| 12 | Not used | ||
| 13 | E | Navigation video signal, blue | Video module | 
| 14 | Not used | ||
| 15 | M | Shield | Video module | 
| 16 | Not used | ||
| 17 | E | Synchronisation signal | Video module | 
| 18 | M | Audio signal AF- | Radio | 
| Pin | Type | Description / Signal type | Connection / Measuring notes  | 
|---|---|---|---|
| 1 | E | Antenna signal | GPS antenna | 
| 2 | M | Shield | GPS antenna |