It wasn't too difficult. Find a place to mount the lights, and run your wires.
I chose to ground each at the metal portion of the dash on either side (behind the removable panel on each side).
I tied in the hot wires together, I then tied into the power side of the dimmer switch. By soldering the end portion of a piece of 16 gauge wire, I was able to create a bit of a connector pin. I was able to insert this into the pin slot for the green wire on the dimmer switch. I had to pull it out a few time to get the length right so that it wasn't sticking out past the connector.
Secure with zip ties to keep everything neat and tidy.