1. Brake Pedal: When you press the brake pedal, it activates the brake system's hydraulics.
2. Brake Light Switch: A switch, usually located near the brake pedal, is mechanically activated by the pedal's movement. This switch closes an electrical circuit.
3. Electrical Circuit: This closed circuit allows electricity to flow from the car's battery, through a fuse (to protect the circuit), through the brake light switch, and then to the brake lights themselves.
4. Brake Lights: The brake lights (bulbs) are wired into this circuit. When the circuit is complete (switch closed), the electricity flows through the bulbs, causing them to illuminate.
5. Grounding: The brake lights also need a good ground connection to complete the circuit. This is usually a metal part of the car's chassis. A poor ground can prevent the lights from working.
If your 1993 Caprice brake lights *aren't* working, the problem lies within one of these components: a blown bulb, a faulty brake light switch, a blown fuse, a broken wire in the circuit, or a poor ground connection.
