ok heres what i am doing to my HHR. I want to run my two sony xplod 12s in the back of the hhr but I want to maintain the stock head unit. Can I install my amp in the back in the cargo hold and where do I run the remote wire so I can connect to the factory head unit. can I tap into the 8'' sub amp wiring to steal the remote wire(splice in) or what all help would be great and pics will pursue thoughout this project.