Has anybody used this adapter to add an amp to their car:

http://www.newministuff.com/new/shop...uctshow&id=469

What I want to know is do I have to run individual wires from my amp to each speaker or do I run them back to this harness and it goes through the stock wiring from there. Not interested in running a bunch of wires (been there, done that). I emailed newministuff about a week ago but got no response.

Thanks