In an ocean of cars using daytime running lights, motorcycle headlights don't get much notice. A modulator will pulse your headlight beam during the day, instantly attracting the attention of other road users. Includes a programmable sensor to automatically turn the unit on and off at specific ambient light levels to comply with DOT regulations which forbid nighttime modulation. When used as intended, headlight modulators are completely legal in the U.S. and Canada—and we can say from experience that they absolutely do work.
This modulator has been designed to fit certain Suzuki, Ducati, and BMW motorcycles with single-filament dual headlights—bikes with one high beam and one low beam, and when the low beam is on, the high beam is off, and when the high beam is on, both low and high beams are on. It is not recommended for use on BMW R1200S motorcycles. It can be used with H1, H3, or 9000 series bulbs and should not exceed the maximum load of 55 + 45 watts at 14.5 volts. Installation requires cutting the high- and low-beam power wires and splicing the device into them.