First...organie your tools...make sure everything is where you need it (I'm getting ready to install a Kicker KX1200.1 and a 4.25 cubic foot enclosure filled with a Solo X 12" in a standard cab pick-up...so I understand your anxiety) depending on how extreme you are going.....you can go one of two routes....run the wire through the fire wall, and either run it on top of the carpet with single screw hold down clamps...(so it looks neat)...or you can rip the seat out, pull the carpet back, and run the wire under it...(or you can leave the carpet down, and fish a coat hanger under it...attach the wire to it...and pull it through. Make sure ALL YOUR CONNECTIONS ARE GOOD...CLEAN PAINT AND RUST AWAY FROM YOUR GROUND LOCATIONS...AND SOLDER ALL YOUR TERMINALS AFTER YOU CRIMP THEM. And if you intend to use any trim pieces in your vehicle to conceal the wires, make sure the wire will fit, and not cause the trim to pop out when the bass hits....GOOD LUCK MAN....Friday is my day to reek havoc on the neighbors windows......BOOOOM!