Gracias, he podido ver en un video como se desconectaba para poner el de la camara. Tambien lo vi en el pinout:
Multi-pin connector 4, 12-pin, for CD changer control and CD audio input signals
1 – AUX signal input, left
2 – AUX signal earth
3 – CD changer, audio signal earth
4 – CD changer, voltage supply, positive, terminal 30, contact continuous load greater than 1 A, temporary peak load 5 A
5 – Not assigned
6 – CD changer, DATA OUT (data exchange for CD changer control from radio navigation system to CD changer)
7 – AUX signal input, right
8 – CD changer, left audio channel, CD/L
9 – CD changer, right audio channel, CD/R
10 – CD changer, control line, switched positive
11 – CD changer, DATA IN (data exchange for CD changer control from CD changer to radio navigation system)
12 – CD changer, CLOCK (internal check protocol for data flow monitoring)