nccareer

I am quite befuddled about where I obtain the signals in from the stock Lexus Pioneer system. It appears to me that the head unit and amp are integrated and that there is no way to gather an input before the subwoofer amp. Plus since the new subwoofer I am adding already has an amp - what do I do?

Can I hook into the signal from the 35w base system?

Do I need to add anything in the line to decrease the power?

Suggestions much appreciated!