* Brake Light Switch: This is the most common culprit. Located near the brake pedal, it's a simple switch that closes when the brake pedal is pressed, completing the circuit to the brake lights. It can wear out, get misaligned, or become internally broken. This is the first thing to check after ruling out fuses and bulbs.
* Wiring Harness: Wires can corrode, break, or become disconnected at various points along the path from the brake light switch to the lights themselves. Check for breaks or chafing in the wires, especially near the connectors. Look under the car and in the trunk area near the taillights.
* Tail Light Assemblies: Even if the bulbs are good, there could be a problem within the taillight assemblies themselves. Check the sockets for corrosion or damage. A broken ground connection within the taillight housing is also a possibility.
* Brake Pedal Position Sensor: Some cars use a sensor to detect brake pedal position. A faulty sensor can prevent the brake lights from illuminating. This is less likely than a bad switch, but possible.
* Centralized Body Control Module (BCM) / related modules: While less common in older cars like a 1992 Camaro, a faulty BCM or a related module responsible for controlling lighting might be the issue. This is generally diagnosed last as it requires more specialized tools and knowledge.
* Poor Ground Connection: A weak or missing ground connection somewhere in the circuit will prevent the lights from working. This could be anywhere from the taillights to the brake light switch.
Troubleshooting Steps:
1. Visual Inspection: Carefully examine all wiring leading to and from the brake light switch and taillights. Look for any signs of damage, corrosion, or loose connections.
2. Brake Light Switch Test: The easiest way is to have someone press the brake pedal while you check for power at the switch wires with a test light or multimeter. You'll need a wiring diagram to identify the correct wires.
3. Continuity Test: Use a multimeter to check the continuity of the wiring from the brake light switch to the taillights. This will help locate any breaks in the circuit.
4. Ground Check: Check for a good ground connection at the taillights and the brake light switch.
If you're not comfortable working with car electrical systems, it's best to take your Camaro to a qualified mechanic. They will have the tools and expertise to diagnose and repair the problem quickly and efficiently.
