the best way is to go through the antenna hole, on the passenger side, pop off the rocker panel cover, then the kick panel, and pull the carpet and insulation back, almost directly in the center of the slanted part of the floor pan there is a gromet about 1" in diameter with 1 wire going through the center of it (antenna wire), if you are using something less than 4 gauge it will just push right through beside the antenna wire, but if you use 4 gauge then you will need to trim some out of the gromet. once the wire is through you can feed it behind the kick panel and under the rocker guard and you have a professional clean instalation. BTW it is best to shove the wire through from the cab side, because it comes out right under the air box and it hard to get to from the engine compartment but is easy to get when you shove a bunch through from the inside. hope this helps