I've got a non bose a3, and I've already put my Alpine HU in the car. I've got the loom adaptor so that the rear speakers still work. Now I have an amp and subwoofer ready to install, but can't work out how I'd go about installing it.
Would I run the rear speakers from the new amp and remove the Audi sub (and amp) in the boot? How did you guys connect your sub and rears?
Where's the best place to run power cables so that they're hidden and go into the boot?