well curtis you can take their advice or someone who has been doing this for well over 15 years, as well as being a hydraulic and electrical troubleshooter for well over 8 years. I have wired everything from computers to high power sound systems. I did say use anything from 14 to 16 gauge wiring for the speakers the reason I recommended 14 gauge is that it gives you all the wiring size you are going to need no matter what kind of power you want to run to them and since its pretty close in cost to what you pay for 16 gauge its just as well to run it. The reason they tell you to tap the factory wiring is that they are lazy plain and simple, you are running it to the door anyhow how much harder is it going to be to run it into the door especially when its so easy to do so. The factory stuff is not designed nor meant to be used for amped speaker wiring trust me on this its not worth the time to use it, if you run 16 gauge and tap the wiring you are choking down the current capability of that wiring, just suck it up and run it into the doors you will thank me down the road if you do this. The molex has 2 clips on it 1 facing the back and 1 facing the front use a butter knife or plastic upholstry pry tool to depress the clip and remove it from the door once you do that you do not even need to unplug it remove the rubber and you can run the wiring on the outer ring.