Does anyone have one, or know how to get a hold of Technic? After checking a very long thread, I figured out I have the Logic7 (at least I think so) system in my 335xi and would love to add one of my amps and a sub in the trunk.
I thought it would be much more difficult, but apparently with this harness it is an easy DIY if you have a working knowledge of car audio.

Any help would be much appreciated.