A vehicle windshield wiper and headlight control that only allows operation of the windshield wipers when the headlights are ON has a wiper control switch and a headlight switch connected to a battery, wiper motor, and headlights. The headlight switch has a pair of switches that are concurrently closed...http://www.google.de/patents/US5051873?utm_source=gb-gplus-sharePatent US5051873 - Combined headlight and windshield wiper control
