I just put that exact lock on my truck yesterday.
The wiring aspect was easy. Just tap into the orange/black and pink/black wires going to the drivers door. There is a connector located behind the kick panel. I unplugged the connector from the body of the truck, unwrapped the tape an inch or two, then tapped into the wires.
Now, mounting the lock and routing the wires through the tailgate was a pain. All I can say is have patience. You need 3 or 4 hands and only have room for one.
It took me about an hour or so all together. I am really pleased with the function and quality.
Let me know if you get stuck, I'll be glad to talk you through it.
Shawn