hi guys I have an 04 530i I have ordered part number 65 12 0 153 502 for retrofitting aux into my car. this weekend I will be adding a glovebox aux jack, backup cam, and modmynav and spec dock cigarette ipod docking station to my car. those who have done these kind of mods know i will have to remove a lot of trim and paneling so I figure while I have everything open I want to tap into the aux line behind the glove and extend it into my armrest where the cradle would normally be. could someone tell everything i would need to do this?