I've heard so many stories that I'm not sure what to believe anymore. I know on my Mark VII I was able to use a harness and bypass the amplifier. In my Mark VIII I was told that I couldn't do this so I ran my own wires everywhere. I guess in the long run this will help when I build a better system but now I hear you can bypass the amplifier like in the Mark VII. What's the truth and where did you guys get your harnesses from? I need to do an install for my brother-in-law but would rather not spend all day running wires throughout the entire car.