Porsche OEM Head Unit Pinouts
Find the connector diagram and pin assignments for your original Porsche radio. Select the matching head unit below.
Match the radio part number and connector keying before wiring. Confirm the viewing direction against the numbers on the connector. N.C. means no connection.
Porsche 911, Boxster, Cayenne Head Unit
2003-2009 years
1357
2468
| Pin | Function |
|---|---|
| 1 | Speed signal |
| 2 | Free |
| 3 | Free |
| 4 | Terminal 30 |
| 5 | Terminal 30 for windscreen antenna |
| 6 | Free |
| 7 | Free |
| 8 | Terminal 31 |
1357
2468
| Pin | Function |
|---|---|
| 1 | Loudspeaker, rear right + |
| 2 | Loudspeaker, rear right - |
| 3 | Loudspeaker, front right + |
| 4 | Loudspeaker, front right - |
| 5 | Loudspeaker, front left + |
| 6 | Loudspeaker, front left - |
| 7 | Loudspeaker, rear left + |
| 8 | Loudspeaker, rear left- |
14710131619
369121518
25811141720
| Pin | Function |
|---|---|
| 1 | Lineout, rear left (may be CAN bus?) |
| 2 | Line out, rear right (may be CAN bus?) |
| 3 | AF ground |
| 4 | Line out, front left |
| 5 | Line out, front right |
| 6 | Terminal 30 for amplifier |
| 7 | Control lead for CD changer |
| 8 | Terminal 30 for CD changer |
| 9 | Free |
| 10 | Data lead |
| 11 | Clock lead |
| 12 | Reset lead |
| 13 | Free |
| 14 | Free |
| 15 | Free |
| 16 | Free |
| 17 | Free |
| 18 | CD AF ground |
| 19 | CD AF, left |
| 20 | CD AF, right |
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12345678910111213
| Pin | Function |
|---|---|
| 1 | Video signal, red |
| 2 | Video signal, green |
| 3 | Free |
| 4 | Free |
| 5 | Free |
| 6 | Terminal 31 |
| 7 | Free |
| 8 | Free |
| 9 | Free |
| 10 | Terminal 30 for navigation |
| 11 | Terminal 58 d |
| 12 | Free |
| 13 | Terminal 30 |
| 14 | Video signal, blue |
| 15 | Video signal synchronization |
| 16 | Video signal ground |
| 17 | Free |
| 18 | Free |
| 19 | Terminal 31 |
| 20 | To combination plug III pin 6 |
| 21 | From combination plug III pin 11 |
| 22 | Free |
| 23 | Fuel consumption signal |
| 24 | Speed signal |
| 25 | Free |
| 26 | Terminal 30 |
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| Pin | Function |
|---|---|
| 1 | Diagnosis lead |
| 2 | Terminal 15 |
| 3 | Terminal 86 s |
| 4 | Data lead to navigation unit |
| 5 | Free |
| 6 | DSP (amplifier) ground |
| 7 | Handsfree microphone ground |
| 8 | Handset microphone |
| 9 | Handset speaker |
| 10 | Terminal 30, handset |
| 11 | Free |
| 12 | Voice output ground |
| 13 | Voice output |
| 14 | DSP (amplifier) |
| 15 | Data lead from the heater / A/C unit |
| 16 | Free |
| 17 | Data lead from the navigation unit |
| 18 | Free |
| 19 | Free |
| 20 | Handsfree microphone |
| 21 | Handset ground |
| 22 | Handset on-hook contact |
| 23 | Free |
| 24 | Free |
| 25 | Free |
Porsche CDR23 connector reference · CDR32 fitment unconfirmed
2003-2005 years
The available assignment sheet is labelled CDR23. Check the label on your radio before applying these assignments to a unit sold as CDR32.
1357
2468
| Pin | Function |
|---|---|
| 1 | N.C. |
| 2 | N.C. |
| 3 | Telephone mute |
| 4 | Battery positive (terminal 30) |
| 5 | 12 V antenna output |
| 6 | N.C. |
| 7 | N.C. |
| 8 | Ground (terminal 31) |
1357
2468
| Pin | Function |
|---|---|
| 1 | Rear right + |
| 2 | Rear right − |
| 3 | Front right + |
| 4 | Front right − |
| 5 | Front left + |
| 6 | Front left − |
| 7 | Rear left + |
| 8 | Rear left − |
14710131619
369121518
25811141720
| Pin | Function |
|---|---|
| 1 | Comfort CAN high |
| 2 | Comfort CAN low |
| 3 | N.C. |
| 4 | Wake-up / diagnosis |
| 5 | N.C. |
| 6 | Key code input |
| 7 | Telephone audio input |
| 8 | N.C. |
| 9 | N.C. |
| 10 | N.C. |
| 11 | N.C. |
| 12 | Telephone audio ground |
| 13 | N.C. |
| 14 | N.C. |
| 15 | N.C. |
| 16 | N.C. |
| 17 | N.C. |
| 18 | N.C. |
| 19 | N.C. |
| 20 | N.C. |
Porsche CR-31 (1996-1998) Head Unit
Becker (Be2365), p/n 993.645.118.00, 993.645.118.01
1357
2468
| Pin | Function |
|---|---|
| 1 | Speed signal |
| 4 | Battery positive |
| 5 | Powered antenna |
| 7 | Accessory supply |
| 8 | Ground |
1357
2468
| Pin | Function |
|---|---|
| 1 | Rear right + |
| 2 | Rear right − |
| 3 | Front right + |
| 4 | Front right − |
| 5 | Front left + |
| 6 | Front left − |
| 7 | Rear left + |
| 8 | Rear left − |
14710131619
369121518
25811141720
| Pin | Function |
|---|---|
| 1 | Rear left line output |
| 2 | Rear right line output |
| 3 | Audio ground |
| 4 | Front left line output |
| 5 | Front right line output |
| 6 | Vnp (as labelled) |