I have that little coil on my 500. I used it to run a whip light and other little lights on my sand bike. I also had the the e-line coil on the bike at the same time that ran two 6" lights off the front. Boy I really thought I was s**tting in high cotten but now that I own a bike with half the wattage, half the weight worth of crap,twice the light and twice the dependability I realize how poorly designed my lighting was. I don't mean to speak for everyone but I think what we wan't is a 100 watt system that puts out a 200 watts of light even when the bike is at idle. that is what we are working on and the point of this whole post.