scott_RX8

I have a 04 with the standard radio in it. I am working on putting a sub and amp in it right now. I have searched and searched but was never able to come up with an answer for what I was looking for. I know that I will have to use a line level converter but most of the threads that I have found are just on how to hook them up on the Bose system. Do I just hook it up to the wires that go to the speakers?? I know that there have to be some of you out there that don’t have the Bose system and have done this. Is there any easy spot to hook it up at? Do I have to connect it to both speakers since it is just going to be going into a mono amp? I hope that some of you can help me with some of this. Thanks..