| Pin | Name | Description | 
| 1 | Power (+ 9V) | Power (+ 9V) | 
| 2 | Battery charge | Battery charge | 
| 3 | Handsfree sos | Handsfree sos | 
| 4 | Handsfree extern (10K resistor | Handsfree extern (10K resistor to +9 to enable handsfree functions) | 
| 5 | TXE | TXE | 
| 6 | RXE | RXE | 
| 7 | Ignition (10K resistor to +9 t | Ignition (10K resistor to +9 to illuminate the display continiously) | 
| 8 | Antenna extern (10K resistor t | Antenna extern (10K resistor to ground to enable external microphone and antenna) | 
| 9 | Audio 1 | Audio 1 | 
| 10 | Audio 2 (loudspeaker amplifier | Audio 2 (loudspeaker amplifier output) | 
| 11 | Microphone (use electrect micr | Microphone (use electrect microfoon and 46 db preamp.) | 
| 12 | Audio ground (do not connect t | Audio ground (do not connect to 13 and 14 ) | 
| 13 | Ground (supply) | Ground (supply) | 
| 14 | Ground (supply) | Ground (supply) |