Abstract: A windshield wiper-light control system provides running light functionality to vehicle headlights in association with the coupled operation of the vehicle's windshield wiper system and lights. A pulse generator provides a pulsed output to drive the headlight at a reduced effective power level. Further logic also disables the pulse generator when the vehicle's ignition is off. A light sensor system may be incorporated to allow automatic operation of the vehicle's lights in response to darkness. When the windshield wipers are engaged, the pulse generator is placed into a continuously on output mode, providing full power to the lights. Simultaneously power may be applied to other vehicle lights, such as the taillight and dashboard lights.