I have always mounted a remote garage door opener on every bike I have owned. I don't want to carry a remote on my person. This also allows any rider in my family to open the door on the way out or return.
Start by opening up your spare remote. Solder 2 wires to the circuit board (1 on each side of the activation switch). They will run to the switch mounted on the bike.
For my switch I used Mcmaster Carr PN 6915K221
. You must search on their site for the part number, I cant hotlink directly to it.
Basically, after drilling a hole in the side of the remote for my wiring to exit, I snapped it closed and wrapped it in Saran Wrap including a scrap piece of plastic so the remote buttons could not be pushed accidentally. Then made a small "hold down bracket" so it would not move.
I made a service loop (extra wire coiled out of the way) so I can pull it out to change the battery in the remote.
I drilled a hole in the fairing, installed switch and soldered the two wires to the switch. Now the remote switch activates the garage door while I'm still sitting on the bike.
Be careful that the solder lugs on the switch are short enough as not to touch the bar (where the helmet lock is). I had to trim the solder lugs shorter. If they are close to the bar, they could touch it with any flexing and activate your door when you don't want it to.
This thread is only a suggestion, feel free to show any other ideas on how you did yours or where you located your switch!