Guys need some help from those who have done this. I have a 93 LS400 with the Pioneer system. I'm planning to get rid of the subwoofer amplifier and put in a new ADS amplifier to power a dual coil ADS 8" sub that will go in place of the stock sub. My question now is: the wires going into the stock amplifier, which are the signal wires and are they RCA level or high level? I know sometimes OEM stuff is wired with their own propriortary harnesses, so maybe they could be RCA. That's why I need to ask you guys. And which is the remote cable in the harness? If someone could give me a detailed wire/color code, it would greatly be appreciated. Thanks.

From what I have read around here the HU output is BELOW rca level, like 2-3 volts or something. Someone in another thread suggested this:

http://www.soundoffaudio.com/item.cfm/id/1020