Hi all, is there a way to input and aux cable and a subwoofer (if possible) without changing my head unit? I would like to keep the sat nav (even though I never use it) for value purposes, and all the controls on the stalk. It's 2005 vts model nice car just gets very boring listening to the same cds 😂 If you could tell me what I need to buy and how to taco install I would be very grateful ! Cheers