Peugeot / Citroën / Opel OEM Head Unit Pinouts

Factory radio connector drawings and pin assignments. Match the head unit’s part number and the socket keying before using a table.

Master connector layouts

40-pin Quadlock · radio-side view
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ISO and Mini-ISO · radio-side layout
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Pin functions vary by radio model. Use the model-specific tables below.

Peugeot / Citroën

RD4 Quadlock · Peugeot 207 and Citroën
Full Quadlock connector layout · radio-side view
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Includes the Peugeot 207 (2006–2012) and Citroën RD4. Check equipment fitment before using AUX or changer terminals.

A · 16-pin main · radio-side view
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A · 16-pin main pin assignments
Pin Function
1 Rear right +
2 Front right +
3 Front left +
4 Rear left +
5 Rear right −
6 Front right −
7 Front left −
8 Rear left −
10 CAN high
11 Switched remote output
12 Battery supply
13 CAN low
14 External mute input
16 Ground
B · 12-pin accessory · radio-side view
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B · 12-pin accessory pin assignments
Pin Function
1 AUX 2 right
2 AUX 2 ground
4 AUX 1 right
7 AUX 2 left
10 AUX 1 left
11 AUX 1 ground
C · 12-pin accessory · radio-side view
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C · 12-pin accessory pin assignments
Pin Function
1 Changer power ground
2 Changer CAN low
3 Changer battery supply
4 Changer right audio
7 Changer CAN high
8 Changer audio ground
10 Changer left audio
Clarion PU-2471 / PU-2472 / PU-2473
Full connector layout · radio-side view
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For the reference label with VAN data. Check the part number and rear label, particularly the accessory block.

8-pin power · radio-side view
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8-pin power pin assignments
Pin Function
1 Telephone mute
2 VAN data
3 VAN data complement
4 +VAN
5 Switched 12 V
6 Not connected
7 Battery supply
8 Ground
8-pin speakers · radio-side view
12345678
8-pin speakers pin assignments
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 −
20-pin Mini-ISO · radio-side view
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20-pin Mini-ISO pin assignments
Pin Function
1 Not connected
2 Not connected
3 Not connected
4 Not connected
5 Not connected
6 Not connected
7 Voice synthesiser signal
8 Voice synthesiser ground
9 Not connected
10 Not connected
11 AUX +
12 AUX −
13 Changer VAN data
14 Changer VAN data complement
15 Changer power ground
16 Changer battery supply
17 +VAN
18 Changer audio ground
19 Changer left audio
20 Changer right audio
Peugeot Quadlock · VAN variant
Full Quadlock connector layout · radio-side view
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This is the separate VAN reference. Match the actual radio label before using the display, supply or data terminals.

A · 16-pin main · radio-side view
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A · 16-pin main pin assignments
Pin Function
1 Rear right +
2 Front right +
3 Front left +
4 Rear left +
5 Rear right −
6 Front right −
7 Front left −
8 Rear left −
9 Display supply
10 VAN data H
11 Switched 14 V
12 Battery backup supply
13 VAN data complement
14 Display VAN supply
15 Ground
16 Ground
B · 12-pin accessory · radio-side view
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B · 12-pin accessory pin assignments
Pin Function
1 Fan −
2 Call speaker −
3 Microphone −
4 AUX right
5 CAN low
6 Display on/off
7 Fan +
8 Call speaker +
9 Microphone +
10 AUX left
11 AUX audio ground
12 CAN high
C · 12-pin accessory · radio-side view
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C · 12-pin accessory pin assignments
Pin Function
1 Ground
3 Changer battery supply
4 Changer right
6 VAN data complement
8 Changer audio ground
10 Changer left
11 VAN data
12 +VAN
Peugeot T1 · Blaupunkt BP8145
Full connector layout · radio-side view
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Rear label reference. The labelled power pins are the permanent supply and ground.

8-pin power · radio-side view
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8-pin power pin assignments
Pin Function
7 Battery supply
8 Ground
8-pin speakers · radio-side view
12345678
8-pin speakers pin assignments
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 −
Citroën S8 · 2014 RDS (FM)
Full connector layout · radio-side view
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Speaker assignments from the 2014 RDS (FM) rear label.

8-pin speakers · radio-side view
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8-pin speakers pin assignments
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 −

Opel

CD30 MP3 · Corsa / Meriva (2004–2008)
Full Quadlock connector layout · radio-side view
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Check the label on part 13190855. The AUX-equipped connector label is shown here.

A · 16-pin main · radio-side view
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A · 16-pin main pin assignments
Pin Function
1 Rear right +
2 Front right +
3 Front left +
4 Rear left +
5 Rear right −
6 Front right −
7 Front left −
8 Rear left −
9 CAN high
10 CAN low
11 Telephone mute
12 Ground
13 Antenna control
14 Centre speaker −
15 Battery supply
16 Centre speaker +
B · 12-pin accessory · radio-side view
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B · 12-pin accessory pin assignments
Pin Function
1 Rear-seat audio left
3 Rear-seat audio ground
4 Rear-seat audio control
5 E-bus
7 Rear-seat audio right
C · 12-pin accessory · radio-side view
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C · 12-pin accessory pin assignments
Pin Function
3 AUX left
4 AUX right
6 Telephone audio +
10 AUX ground
12 Telephone audio −
CD50 Phone (2004–2009)
Full Quadlock connector layout · radio-side view
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GM parts 93183074 and 93183073. The phone and AUX assignments are specific to this unit.

A · 16-pin main · radio-side view
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A · 16-pin main pin assignments
Pin Function
1 Rear right +
2 Front right +
3 Front left +
4 Rear left +
5 Rear right −
6 Front right −
7 Front left −
8 Rear left −
9 CAN high
10 CAN low
11 Unassigned
12 Ground
13 Antenna control
14 Centre speaker −
15 Battery supply
16 Centre speaker +
B · 12-pin accessory · radio-side view
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B · 12-pin accessory pin assignments
Pin Function
1 Rear-seat audio left
2 AUX ground
3 Rear-seat audio ground
4 Rear-seat audio control
7 Rear-seat audio right
8 AUX left
9 AUX right
C · 12-pin accessory · radio-side view
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C · 12-pin accessory pin assignments
Pin Function
1 Microphone ground
2 Airbag signal
5 CGI +
7 Microphone +
9 Vehicle speed signal
11 CGI −
CDC40 Opera · Astra / Corsa / Meriva (2004–2014)
Full Quadlock connector layout · radio-side view
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GM part 13251356. Subwoofer terminals refer to the label on the Opera unit.

A · 16-pin main · radio-side view
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A · 16-pin main pin assignments
Pin Function
1 Rear right +
2 Front right +
3 Front left +
4 Rear left +
5 Rear right −
6 Front right −
7 Front left −
8 Rear left −
9 CAN high
10 CAN low
11 Telephone mute
12 Ground
13 Antenna control
14 CS−
15 Battery supply
16 CS+
B · 12-pin accessory · radio-side view
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B · 12-pin accessory pin assignments
Pin Function
1 Rear-seat audio left
3 Rear-seat audio ground
4 Rear-seat audio control
5 Subwoofer +
6 E-bus
7 Rear-seat audio right
11 Subwoofer −
C · 12-pin accessory · radio-side view
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C · 12-pin accessory pin assignments
Pin Function
3 AUX left
4 AUX right
6 Telephone audio +
10 AUX ground
12 Telephone audio −
DVD 90 Navi (2005–2009)
Full connector layout · radio-side view
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Part 13163935. The model label numbers the 12-pin inserts continuously from 17 to 40. The table covers the speaker outputs identified on the rear label.

16-pin main · rear label orientation · radio-side view
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16-pin main · rear label orientation pin assignments
Pin Function
1 Rear right +
2 Front right +
3 Front left +
4 Rear left +
5 Rear right −
6 Front right −
7 Front left −
8 Rear left −

Alfa Romeo / Fiat

Alfa Romeo · Blaupunkt ISO (2000–2009)
Full connector layout · radio-side view
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Quickfit socket label for the Blaupunkt variant. The separate D block is unused on this label.

8-pin power · radio-side view
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8-pin power pin assignments
Pin Function
1 CAN B
2 Bose amplifier input
3 CAN A
4 Not connected
5 Antenna control
6 Not connected
7 Battery supply
8 Ground
8-pin speakers · radio-side view
12345678
8-pin speakers pin assignments
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 −
20-pin Mini-ISO · radio-side view
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20-pin Mini-ISO pin assignments
Pin Function
6 Switched booster supply
7 Phone audio +
8 Phone audio −
9 Radio mute
10 Remote control A
11 Remote control B
12 Remote / mute ground
13 Changer data input
14 Changer data output
15 Changer permanent supply
16 Changer switched supply
17 Changer data ground
18 Changer audio ground
19 Changer left audio
20 Changer right audio
D · 10-pin block · radio-side view
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D · 10-pin block pin assignments
Pin Function
1 Not connected
2 Not connected
3 Not connected
4 Not connected
5 Not connected
6 Not connected
7 Not connected
8 Not connected
9 Not connected
10 Not connected
Alfa Romeo / Fiat · Connect NAV+
Full connector layout · radio-side view
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Match the Connect NAV+ label. The separate Fiat 18-pin telephone connector requires a verified face drawing.

8-pin power · radio-side view
12345678
8-pin power pin assignments
Pin Function
1 CAN B
2 Bose amplifier input
3 CAN A
4 Ignition input
5 Antenna control
7 Battery supply
8 Ground
8-pin speakers · radio-side view
12345678
8-pin speakers pin assignments
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 −
20-pin Mini-ISO · radio-side view
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20-pin Mini-ISO pin assignments
Pin Function
6 Switched amplifier supply
10 Steering control input 1
11 Steering control input 2
12 Steering control reference
13 Changer data input
14 Changer data output
15 Changer permanent supply
16 Changer switched supply
17 Changer data ground
18 Changer audio ground
19 Changer left audio
20 Changer right audio
Fiat Ducato / Panda · Blaupunkt 735434952
Full connector layout · radio-side view
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The base unit uses the CAN bus. Match the radio label before using any accessory wiring.

8-pin power · radio-side view
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8-pin power pin assignments
Pin Function
1 CAN B
2 Bose amplifier input
3 CAN A
4 Not connected
5 Antenna control
6 Not connected
7 Battery supply
8 Ground
8-pin speakers · radio-side view
12345678
8-pin speakers pin assignments
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 −
20-pin Mini-ISO · radio-side view
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20-pin Mini-ISO pin assignments
Pin Function
6 Booster control
7 Telephone audio +
8 Telephone audio −
9 Telephone mute