| Agree with Keefy. The light won't cause the problem, not unless you have the ignition switched on for ages before you go to start it. The gizmo for the headlight (I have one fitted to the ST2) is mainly aimed at protecting the old regulator/rectifiers that end up frying due to the high demand on the electical system after starting a bike with a low charge battery. Going to a higher gauge lead to the starter motor helps out a bit with starting from a low battery, but really making sure your battery is healthy and maintaining it (lots of riding or an optimate) is the way to go. | 
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