Automatic Headlight Brightness Switch Driving the highway with your high-beam headlights can really increase your visibility, but can he a blinding hazard for other drivers. This simple circuit can be wired into your headlight switch to provide automatic switching between high and low beam headlights when there is oncoming traffic. It does this by sensing the lights of that traffic. In this way, you can drive safely with your high-beams on without blinding other drivers. Part Total Qty.
Suitable places are on the dashboard, in the front grill, etc.
Adjust all the pots for proper response by testing on a deserted road. S1 enables and disables the circuit. 4. B1 is, obviously, in the car already. Before you try to connect this circuit, get a wiring diagram for your car. Some auto manufacturers do weird things with wiring.