ok, so i drive a 2008 323i. it has NO factory amp. where is the easiest place to pick up a signal for the amp i want to add. i have looked at just about every website i can find, and everyone has either a black amp, a silver amp, or the wiring at the left side of the trunk for an amp. i have none of the above. i do have, some wiring in the middle of the trunk, in front of the storage cubby. every wiring diagram i have seen, shows different colour wires than i have.
does anyone here have any experience with this?