Hi there, I'm new to the whole Audi scene, just bought a 8P A3 Sportback, non Bose. I have a 10" active sub from my previous car, and I wanted to hook it up. However, for the moment at least, I plan on keeping the Headunit and speakers original, and just adding the sub. What would be the best way to go about this? Obviously I'd have to run power cables to the boot, and that shouldn't be an issue for me, but I was wondering where to tap into for the RCA output. Is it possible to bypass the factory sub, and get a signal from straight from the built in sub/amplifier/somewhere around there? Oh and the remote signal wire too. I haven't opened up that area yet, don't really fancy messing something up a few days after I get it, so I'm not too sure what it looks like behind the carpeting. My idea was to disable just the factory sub, and redirect the audio signal that it gets to the active sub. Any guidance would be greatly appreciated!