In my case I ran them from the aux fuse panel, which was an option I added when I ordered the machine. The panel is hot when the ignition is on - I put a rocker switch in the aux switch panel. I would recommend you include a switch, even if you leave it on all the time. Being able to cut the lights is helpful, esp. if you have to work outside the machine and don't want to be blinded
The switch cutouts in the factory switch panel are apparently a standard size - I picked up lighted 3/4" rockers via Amazon and they popped right in.
The nice thing is that the LED's don't draw much, so I was able to use a relatively small fuse and corresponding wire. 120w/12v = 10A max draw. For all of the lights, I ran both power and ground back to the fuse block (there's a ground block too) rather than trying to find a good ground close to the lights. All wired were covered in 3/4" split loom, and all connectors crimped them covered in heat shrink tubing.