Okay, got mine installed. Once I found where it plugged in, only took a couple minutes. I was able to find where one of the plastic taps secures. I realized that the cord is meant to go straight down and run under the truck, just above the frame (past the alternator) then straight to the front. If you look at the front with the hood open, you'll see that there is a plastic hook on the left designed to secure the plug, running from bottom to top. Anyways, get under the front of your truck and look at the rear of the passenger headlight. Follow your eyes to the left and there is a small drilled hole. Voila, lines up perfectly with one of taps on the cord. I wasn't able to find the second hole, probably because its towards the middle of the engine where I can't reach.

Expert tip: remove the turbo air intake.. makes the install of the cord much much easier.