pin's designation for a 22DC594/62B to connect a mp3 device

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Hi,

I want to connect a mp3 device to a 22DC594/62B radio (it's from a renault megane). I have a pre-made cable that connect's in one way a 3.5mm jack (to a mp3 creative) and in the other side i don't know where i will connect this cable (on radio) I have a male connector plug but i don't know the pins (I think that this plug is for a cd box...


Regards
Herculano