take a flat head. run it under the seat, there are 2 push pin type deals and it should unlock it. Just be patient, they dont want to come out the first time. And i would run the power through the center console so you dont get whine from the rca. Plug the 1/0awg wont go under the trim, lol
the kick pane, and the door trim. I have huuuuuuge wiring. If you have 4awg you should be ok. Just make sure your rca's and the power are on opposite sides of the car or you will have alternator noise.