hey guys, i just got a 2005 grand prix today (excited! its my first car, a hand-me-down from my mom) but i was also given a set of two 12" subs from a friend of mine a year or so ago. and im looking to install them in my Grand Prix. it does NOT have the monsoon system or the sterring controls. i was originally going to install and after-market head unit as well but found that the adapter was about $100 extra. so i want to just hook them up (with an amp) to the stock head unit. to do this i know you need to use a Line Output Converter. i also know you need to tap into the rear speaker wires. im not sure on how to do this though. you dont lose your rear spearkers do you? any pictures or videos would be excellent help! also where is a good place to put the power wire through the firewall? thanks in advance for all the help! stupid adapter through everything off. i knew how to set em up with an external head unit
