Automatic Day/Night Feature Operation

Automatic day/night feature of driver outside rearview mirror is controlled by inside rearview mirror. Inside rearview mirror supplies a signal and a low reference to driver outside rearview mirror. Voltage on signal circuit of driver outside rearview mirror varies between 0.5-1.5 volts depending on light conditions existing at inside rearview mirror. At night, with automatic day-night feature enabled, driver outside rearview mirror will automatically darken with inside rearview mirror to reduce headlight glare from behind. Voltage on signal circuit of driver outside rearview mirror will be about 1.5 volts. In daytime, mirrors are in a normal state. Voltage on signal circuit of driver outside rearview mirror may be about 0.5 volts. For further information on inside rearview mirror. See AUTOMATIC DAY/NIGHT MIRRORS - DEVILLE & SEVILLE article.