If you install it, make sure you have a strong generator and battery, I can't use mine in the first 10 seconds as it saps the left over power from cranking, saying that I have no issues what's so ever with the electrical and still running on the original battery cared by a trickle charger.
I got mine from eBay and hooked into the original loop with a slim ballast. Ah and I can only turn it on after the bike is running otherwise during cranking it turns off and stay off.