I have recently bought a B7 3.0 Tdi cabriolet and I think it is the best car I have ever owned. The only issue I have with the car is that the previous owner has cut off the factory connectors to the audio system at the rear of the head unit. I am left with bare wires and know clue of the colour codes. Does any one have any wiring diagrams or pin outs that include wire colours? Thank you in advance.