I am trying to add an amp and sub to my 07 H3. What is the easiest way to do this and does it require any adapters. It has a factory sub, can you tie into that for signal and remote power? Also, does anyone know where the amp is located in the factory system, or if there are any good walk-thru's on the web?

 

However, after searching and reading through the old posts, I became confused as to whether or not all the speakers in the car are powered by the amp that came with the monsoon package in the back left panel of the trunk.