Hey guys, I want to replace the stereo in my 2002 Polo, got no idea what wire is what, looked in the radio manual and no luck there.

I don't really want to pay to have it put in but I don't want to have to take my car apart to find out what each wire is either, any way I can get my hands on a wiring diagram?

Oh, and the stock stereo is a Eurovox 4685VW and I wanna replace it with a JVC KD-G615, just FYI, if it matters