Does anyone know if the main bulb on this is being fed AC direct from the dynamo or does it go through a bridge rectifier first? I presume that there is some rectifier diode in the light as the light on indicator is an LED even though the main light is a quartz halogen. The electronics inside are sealed in a black box. Certainly no voltage regulation for the main bulb apparently as Shimano fits a 9.5 volt 5 watt Halogen bulb, to keep it from being burned out I presume.
I was wondering as I am trying to figure out if the main lamp could be replaced by one of the Maglight LED conversion modules to increase the light output to something more useful. My LP-R600 was included with a new bike and promptly upgraded to the B&M IQ Cyo Senso headlight to get some reasonable light output.