Circuitry for controlling automobile headlights from windshield wipers

摘要

Circuitry is provided for a vehicle which automatically turns on the vehicle's headlights during operation of the windshield wipers of the vehicle. A signal voltage is supplied to the circuit from either the power line to the wiper motor or, in the case of pneumatic wipers, through a pressure actuated switch mounted on the wiper motor air line. The signal voltage opens a first transistor, which through a voltage network opens a second power transistor. The power transistor then closes a circuit between the main and lighting circuit power lines of the vehicle.