Hi beams during the day for sure...low beams when cars are approaching at night.
I have a Biker Buddy headlight modulator in my cruiser, and there's a HUGE difference in people seeing me on it...but the Connie has 4 lights in front, so not sure if that's necessary. I read somewhere that 3 or more lights let the human eye determine distance much better, but I know that when I switched to the flashing modulator, people stopped turning left in front of me, or popping out of side streets.
Anyone using modulators on their 2010+ Concours? What brand, please post links...