Hi all, I'm new to this site and recently purchased a 2008 TL Type-S. I was cleaning some things inside the car and found a power cable, ground cable, remote start wire and RCA's running from the trunk all the way to the factory stereo. I want to get those wires out. I was able to remove the ground and positive cables with no problem, but what has me lost are the RCA's leading to the factory deck. I know the factory decks don't have preamp outputs and I'm wondering what could have been done to have RCA cables lead to a factory deck. Could a line converter been installed up front?