I did this install on a Laramie. A few tips:
1. Familiarize yourself with the underside of the driver's side dash...you will be spending some time there.
2. Get good lighting set up under there, and be ready to be a bit of a contortionist to mount the CAN control box and poke through the firewall to run the wires.
3. Follow the instructions, don't jump ahead.
4. The wiring is the "hard part", but it's not so bad if you sorta study the layout of the wiring.
5. The control box mounts really easily, but way up high and to the outside of the inner firewall. The graphics in the instructions don't represent it well, which is why I recommend studying it.
On a difficulty scale, I'd rate this a 4 out of 10, but it takes a while...took me about 2.5 hours, but I move slow and thoughtfully.
You'll love 'em. Ping me if you need anything...