Okay guys, I know there's threads all around, but a lot of them still don't answer all my questions, so maybe the audio gurus in the forum could help me out. I drive a 2003 TL-S, and I just recently upgraded to the MB Quart Q-Series all around. I know I'm going to wire my old school rockford fosgate 800a4 and my 1000a1 back into my car to power my eclipse sub, but I'd like to know if its possible to hook everything up to the Stock HU. I was reading about hooking up the amp up and bypassing the eq, but the links pretty old, and its not working anymore . Can anyone help explain to me which wires to tap into the HU so I can run the RCA’s into the amp? Thanks in advance.