Ok so I looked on hear to figure out which wire to tap into from my bose subwoofer. I hooked it up and the signal was kinda weak. I used to have the same system in my grand am and the bass output was stronger. The gains are the same on the amp as it was in the grand am, the only thing seriously different is the car and the battery. I'm still using the factory battery in my 6, but in the grand am I had an orbital exide with 890 cca. Does that battery make that much of a difference? And should I have tapped into my speaker wires instead of my subwoofer wires? Because thats what I did in my grand am!!!