Like many others I wanted to install a button for my garage door opener. I intuitively looked at the seldom used Pass button since it is a momentary button just like the garage door opener buttons.
I started by reading the wiring diagram and found that the pass button was simply paralleled with the brights switch. I dismantled the left side switch module and followed the Pass button wires. I found that they attached to the brights switch wires about 6 inches after leaving the switch module. I disconnected the wiring harness from where it plugged in behind the headlight and pulled the entire harness off the bike. I taped a new set of wires to the end of a hanger and pushed them through the harness tubing. I then cut the pass button wires where they attached to the headlight bright switch wires and taped up the stubs. I stripped and attached the pass button wires to the 2 new wires I just ran through the harness sleeving and reassembled and reinstalled the left side switch module.
Next I opened up my garage door module, soldered a couple of wires to the momentary button connections on the bottom of the circuit board and ran them out the side the garage door opener case. The original switch is still functional since I'm just paralleling the connections. I attached those 2 wires to the wires that I ran to the pass button and tested my Pass button garage door opener.....sweet!
I just tie wrapped everything in place and reassembled the headlight cover and job complete.