Here's what I did on my mini garage door remote....I have a 2012 RT, and this won't appeal to everyone, but I didn't want to have a button on the dash....I wanted a "hidden" button. You have to bend down to press the button, but if you didn't know it was there you'd never see it!
Pretty easy installation....I took the side cover off that you need off to check the oil. If you turn it over, you will see a small screw that holds on the chrome "Can-Am" logo. There is enough room in the cavity of the chrome accent to install the mini remote.
First off, it's a Genie mini remote. I took it apart (one screw), and soldered two wires on the backside of the IC board. The wires connect to the "large" button. I drilled a hole to install the pushbutton on the bottom of the chrome accent piece, installed the pushbutton and then soldered the other ends of the wires to a momentary single pole pushbutton. (Radio Shack for about $4.00)
Before reassembly, I removed the rubber button from the remote, so there is no way for it to get pinched or accidentally pressed when I reinstalled the panel. I used velcro to hold the mini remote in the cavity.
I've had this on for over 4 months and ridden in some fairly heavy rain with no issues. Works good and is still easy to get to when the battery needs changing.
Hope this helps!