Hi all, Been looking into fitting the Audi Bose system to my a4 cab, I can get the speakers and amp no problem but my question is does anyone know if the wiring loom was factory fitted or will I need to get the loom? Also if it’s not factory fitted will it need to go to the head unit or is it terminated under the rear seats somewhere? And if anyone has the part number and cost for the loom if needed please let me know them. And one more, if you’ve fitted one of these before what was the difference in your opinion? Cheers.