ISO harness for 2009 Audi TT 2.0 TFSI Auto?


New Member
I would be most grateful if anyone could help, I have a Pioneer double DIN stereo, but having real trouble getting the correct ISO harness. 2 companies sent me what they thought was the correct item, both sent the same item which was completely wrong, all the wires are in different positions entirely. I have attached images of the wiring diagram from the stereo from the car and also the ISO connection itself.

There was a previous similar to this, also regarding a Pioneer stereo, but I could not find the information I needed there. I'm not sure if it is because my car is automatic, obviously the wiring is going to be different to a manual car, not sure why this would impact the stereo wiring though, maybe just different.

Any help would be much appreciated!


  • details on stereo.JPG
    details on stereo.JPG
    5.2 MB · Views: 6
  • ISO car connector.JPG
    ISO car connector.JPG
    5.4 MB · Views: 5
  • ISO car connector 2.JPG
    ISO car connector 2.JPG
    5 MB · Views: 5


Registered User
Take car and stero to Halfords get them to tell you which lead it is they might even have one

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