Repeating a mod from previous bikes (and as posted a couple of times here), I wired in and mounted my garage door opener today. I put it on the plastic flange/cover just above the gas cap. Just wanted to share this mounting location in case people are looking for options other than mounting the button on the dash. There was plenty of room to stick the opener under there, the push button is pretty unobtrusive and I can get to it easily with either hand.
Drilled a small hole in the opener case for wires which I soldered to the switch contacts of the opener. Drilled a 1/2" hole in the flange/cover to mount the push button switch from Radio Shack ($4). Popped everything back together, tightened up the two bolts and it's time to hit the road again. Pics below....