Hello all not long brought an a3 and have just replaced the standard head unit with the rns-e. I plugged her all in and the aux port (near handbrake) dose nothing. After reading up a little I've found out you have to buy other leads ect !! Really surprised its not just plug and play :/ can anyone help with what I need please I would also like the iPod connection thingy :L but mainy just the aux port working near my hand break thankyou.