The Headlight operates from the 24V or 36V battery Pack.The guage shows how much of a charge remains in the battery Packs. There is a red pushbutton on the hand grip that operates the horn. The rocker switch operates the Headlight. This is not a  headlight to see in the dark. This Headlight is used for people in cars to see you.

There is plans to replace the existing bulb to a bulb that will light your path in the darkness.