Modern cars are amazing in so many ways, including the brilliant external lighting. Projector-style headlights send a focused beam precisely where you need to see and some systems even react to and ...

Ford's Focus uses a Halogen H7 bulb in its low-beam socket. Open the bonnet and remove the two Torx screws holding the headlight in place, then lift the headlight forward and out of the car. Unplug ...