Originally Posted by jamze132
You do not need a special harness or anything. I tied right into the factory amp with speaker wire taps. I can't find the wiring diagram we used but it's floating around the internet. We tied the speaker wires into a line level converter and poof, you have an amp + sub tied into your factory system. Took 2+ hours and a 6-pack of beer.
Even if that works, I would still use Technic's harness. Much cleaner and nicer and only takes 5 mins to install.