The last toy to set up was the I/O controller used to drive the garage door. I read over the instructions until I was dizzy; per my understanding, the important tidbit was that the relay outputs were marked R1A/R1B for the first output and R2A/R2B for the second. I started with the garage door opener back side.
A pair of wires from a CAT5 cable are connected on either electrical side of the garage door button. With the wires connected I put the plate back on the wall.
You can run the cable inside your wall for a cleaner look, but know what you're doing before you try, as its not as easy as it sounds (for most folks). Connecting the other ends of the wires to the relay took a very small screwdriver. Either wire can go to either side, as the relay only closes the circuit. All I had to do was plug the I/O controller into a wall outlet and pair it with a controller per the previous procedure. I did end up having to move an access point to get it paired, but once paired I had no problem with the controller functioning after I moved the access point back into place.
I made a mess out of our kitchen table for a few nights, but my wife forgave me after she got to play with the lights.