Just added a genuine iPod interface into my wife's a3 but can't get it to work. Works perfectly in mine so it's not the unit. So my questions are 1) even if I don't want to charge the iPod does the brown wire need to be wired in? 2) when I plug it in, I double click CD on the Chorus HU and it doesn't do anything. Do I need to code in VAGCOM? Thanks in advance!! Questions.