Car Radio ISO Wiring Pin Positions

This page gives guidance on Mini ISO and ISO Car Radio connections. Generally only used on vehicles up to 2005, from that point Quad Lock connections where used instead.

Connections for Block C Mini ISO – Left hand side, uses Yellow plug

 

1) Line out Left Rear +

4) Line out Left Front

     3) Line Out Ground/Earth

    6) Switched Positive for Amplifier

2) Line out Right Rear +

5) Line out Right Front

 

Connections for Block C – Centre, uses Green plug

7) TEL +ve

10) ENA

     9) CAN Low

     12) TEL -ve

8) CAN High

11) REM

7 – Telephone Audio Input Signal – TEL +ve
8 – Second display, CLOCK (for radio sets with CAN databus communication CAN High)
9 – Second display, DATA (for radio sets with CAN databus communication CAN Low)
10 – Second display, ENA (not assigned for radio sets with CAN databus communication)
11 – Remote control, REM (not assigned for radio sets with CAN databus communication)
12 – Telephone Audio Input Signal – TEL -ve
Above based on VW Symphony 2, not applicable to all connections of this layout.

Connections for Block C – CD Changer Right hand side, uses Blue plug

13)  Data in

16) Voltage supply

19) Left Channel positive

       15)  Clock

 18) Left & Right Channel Earth

 

14) Data out

17) Control Signal

20) Right Channel positive

 

 

 

Connections for Block A – ISO Power

1) Not Used 3) Not Used 5) +12v output Blue 7) Battery + Red
2) Not Used 4) Ignition +12v Yellow 6) Illumination Orange 8) Ground  Black

 

Connections for Block B – ISO Speakers

1) Right Rear + Purple 3) Right Front + Grey 5) Left Front + White 7) Left Rear + Green
2) Right Rear – Purple/Blk 4) Right Front – Grey/Blk 6) Left Front – White/Blk 8) Left Rear – Grean / Black