... is used to generate a high voltage current, around 20,000 volts, which arcs between two electrodes ... ten times longer and draws considerably less power, around 35W, than a standard halogen headlight bulb. ... used to generate a high voltage current, around 20,000 volts, which arcs between two electrodes ... ten times longer and draws considerably less power, around 35W, than a standard halogen headlight bulb. ...