Yes the plastic along the bottom of the seat comes apart, it is a pain though and you should be able to just snake the wires all the way down. Are you doing passenger side too? That side is even easier, at least on my truck it has the plastic panel on the back and you can just pop that off and run wires. Good luck with the install. Post up some more pics as you do dynamat and other stuff. Also what are you planning on dynamatting and how much are you planning on using?