the wires that go to the speaker are covered in a kind of fabric / electrical tape stuff. you can just cut that about an inch or two away from where the plastic piece connects to the speakers, then solder the new wires that come with aftermarket speakers to the old ones. As per getting at them, you gotta pop the bench out (lift on the fron, no screws) take out the anchor bolts at the bottom of the back (holds seatbelts in place) then lift the back up and out. The plastic bits around the seatbelts on top pop out and you can pull the mat away from the metal to get better access to the speakers if you want.