I picked up a Kisan Pathblazer headlight modulator for about half price.
http://kisantech.com/mag/index.php/p...zer/p115w.html
Ride report: it definitely draws attention to the bike, a lot of attention which is the main purpose of the modulator. Even a few cagers whom were pulling out, stopped instead, which I found very interesting.
I have it hooked to an inexpensive CREE LED H4, so the response time of the light is excellent. The unit it turned on when you switch to the hi beam, during daytime. The unit comes with a daylight sensor, if needed switch to low beam to deactivate the unit.
Final verdict: it works.