Sheureka hit in on the head. It doesn't take much technical skill as much as the ability to follow instructions to the letter. Now that the pin extraction method has been taken care of, there shouldn't be any major problems. Just make sure you do this during daylight (makes distinguishing between the different wires easier) and make sure you double check your work, especially the part where you're dealing with removing and reinserting pins. Oh, and lower the tailgate before you disconnect the battery (trust me on this).
Like I said, it's not technical, but following directions is key.