Solenoid, xenon lamp shutter

Dipped beam, xenon lamp screened

Fig 1: Identifying Dipped Beam - Xenon Lamp Screened

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Main beam, xenon lamp unscreened

Fig 2: Identifying Main Beam - Xenon Lamp Unscreened

Courtesy of SAAB-SCANIA OF AMERICA, INC.

Xenon lamps always light with the same brightness. The light beam from a xenon lamp is limited by a shutter which is opened for main beam use by a solenoid to increase the beam of light from the lamp. B+ voltage is fed to pin 2 on the headlamp and the solenoid opens the lamp shutter.