Hello, I have an audi a4 b7 2.0 TDI 16 V radio audi concert II in my car, I bought an aux module and connected a tablet to it. Everything works fine, but I came up with the idea that there is an application that when the screen is off, when you press vol +, it changes the song forwards and vol - changes it backwards. I took the cables out of the tablet and I want to connect them to the cables that go from the steering wheel to the radio, but I do not know which cables are exactly. I would like to ask for a diagram or description of the cables (cubes) that enter the radio.
