I disagree with that setup myself, NOT that there is anything wrong with it.. Its just cleaner if you wire it up with an 80 AMP stinger... Here is a diagram that I made.. If your not going to be running a pressure swith (I WOULD NOT RECOMMEND) You can skip the pressure switch and run the wire off the toggle switch DIRECTLY to a hot wire (ACC WIRE) to assure that it shuts down when your truck is not on..
Here is a picture of mine, just to get the idea.. I still have to clean up the wiring AFTER i cut the inners out..