So as much as the light, There's 12V. But then You can find the light along with the diode that bring it back again to all-around 1V. That 1 Volt is necessary to provide the alternator the sign to start charging. The charging method doesnt appear to be wired to https://finntrqol.jts-blog.com/31612449/4age-20v-blacktop-for-sale-an-overview