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36 (20+8+8) pin Head Unit / Car Stereo ISO connector layout
36 (20+8+8) pin Head Unit / Car Stereo ISO connector

CONNECTOR A (C)

Pin
Number
Pin
Name
Description
6   12v Controlled by Ignition for ask Amplifier
10   Input 1 for Steering Wheel Buttons
11   Input 2 for Steering Wheel Buttons 
12   Reference for Steering Wheel Buttons
13   Rx CD Changer BUS   
14   Tx CD Changer BUS
15   12v Permanent for CD Changer 
16   12v Controlled by Ignition for CD Changer
17   GND CD Changer BUS   
18   Audio Reference from CD Changer
19   Left Audio Signal from CD Changer
20   Right Audio Signal from CD Changer

CONNECTOR B

Pin
Number
Pin
Name
Description
1   + Right Rear Speaker
2   - Right Rear Speaker
3   + Right Front Speaker 
4   - Right Front Speaker
5   + Left Front Speaker
6   - Left Front Speaker
7   + Left Rear Speaker
8   - Left Rear Speaker

 

CONNECTOR C (A)

Pin
Number
Pin
Name
Description
1   BUS B-CAN B
2   Input from BOSE Amplifier
3   BUS B-CAN A 
4   Key on Input (+Key)
5   12v for Automatic Aerial 
7   12v Permanent 
8   GND Supply

 

CONNECTOR D (18 pin)

Pin
Number
Pin
Name
Description
2   Serial Line for Telepass
6   Input from Privacy Handset
7   Audio Signal to Privacy Handset (MIC OUT)
8   Microphone Input from Privacy Handset (MIC IN)
9   Input from Handsfree Microphone 
12   Electronic Earth 
13   Crash –ve Signal from Airbag ECU
16   Microphone Input from Privacy Handset (MIC IN Ref)
17     Audio Signal to Privacy Handset 
18   Input from Handsfree Microphone (MIC IN Ref)

 

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