I installed a Kisan Headlight Modulator, Model# P115WD a year ago. Easy plug and play installation. It has made a huge difference in front visibility. In fact, I was so impressed, I bought one for my BMW R1200RT and now both my bikes have them. I don't think I'll ever do without a modulator again.
2012 BMW R1200RT, 2013 Honda PCX150, 2014 Suzuki DL650A
Add-ons: SW Motech Center Stand, Parabellum 24" Windshield, Adventure Tech Over the Dash GPS Mount and Mirror Extenders, Blue Sea Dual USB Port, Shad 49L Topcase, Rigid Industries Dually Spot and Flood LEDs, Whelen 700 LED Brake/Tail Light, Kisan Headlight Modulator, Terry Adcox Double Bucket Custom Seat in all leather, and the following Eastern Beaver products: PC8, H4 Dual Headlight Relay, Brake/Tail/Signal Adapter, Rear Brake Light Switch Connector Relay Switching Adapter.