LOL! Funny you say that!
Skotty was asking me today about the hazards and FTP switch on mine. He has an '03 - they first added FTP and hazards to the '04...
...anyway - I told him that I'm thinking of disabling my FTP so I can use it for a Garage Door Opener!
FTP switch completes the +12v to the highbeam. It is directly wired to the highbeam, it's not run thru a relay. So, if you use it in its current state, you're gonna potentially have +12v running thru your garage door opener. Another consideration is that when the highbeam is turned on via the rocker switch, +12v is also sitting on the FTP switch.
I really don't use my FTP - I can flip a rocker switch for when I need to flash my highbeam... So I was thinking of cutting the wiring from the FTP switch and running two wires from the FTP switch to my garage door opener and soldering them in.