I'll be the first to admit that I don't know much about how this stuff works. I'm learning as I go (hey, we've all got to start somewhere)
While sitting in the staging lanes last night at the track, I had a thought. I had the scanner running and thought to myself that it would be slick if I could turn the fans on from the scanner. That would keep me from hacking into the wiring and adding a switch in the car.
Yes, I know I could modify my "track tune" to turn the fans on at a lower coolant temp. But, the hotkey would be something useful.
I don't know if the fans are something that can be simply turned on/off.