4,793,690 12/1988 Gahan et al 250/214 D X
5,204,778 4/1993 Bechtel 359/604
5,451,822 9/1995 Bechtel et al 315/82 X
Primary Examiner—Robert Pascal
Assistant Examiner—Arnold Kinkead
Attorney, Agent, or Firm—Malcolm R. McKinnon
An automobile headlamp and running light control system for controlling an operating state of automobile headlamps and tail/marker lamps, and determining an operating threshold for an automatic dimming rearview mirror system The headlamp and running light control system including an ambient light sensing arrangement having an ambient light sensor which determines a present ambient light level in a vicinity of the vehicle, a first control arrangement for selecting an operating state of the vehicle lamps in accordance with an output of the ambient light sensor, a second control arrangement for determining the operating threshold of the automatic dirnrning rearview mirror system in accordance with the output of the ambient light sensor, and a lamp switching arrangement which activates and deactivates the vehicle lamps in response to the first control arrangement.
9 Claims, 5 Drawing Sheets