1. The High Beam Switch:
* Check the switch itself: The switch could be faulty. Try wiggling it while someone checks the high beams. A clicking sound might indicate a problem within the switch. Replacement is relatively inexpensive and easy.
* Wiring to the switch: Inspect the wiring harness leading to the high beam switch for any breaks, corrosion, or loose connections.
2. High Beam Relay:
* Locate the relay: Consult your owner's manual or a wiring diagram to find the high beam relay. It's usually in a fuse box (under the hood or inside the car).
* Test the relay: You can usually swap it with a similar relay (check the amperage rating) to see if that fixes the problem. A multimeter can also test the relay's continuity. If swapping doesn't work, the relay is likely bad.
3. Bulbs:
* Check the high beam bulbs: Even if the low beams work, the high beam bulbs could be burned out. Inspect them carefully. Make sure to replace both bulbs simultaneously, even if only one seems bad.
* Properly seated: Ensure the high beam bulbs are properly seated in their sockets.
4. Wiring and Connectors:
* Check the wiring harness: Inspect the wiring from the switch to the headlights and from the relay to the headlights. Look for any damage, corrosion, or loose connections. Pay close attention to the connectors at the headlight assemblies themselves.
* Grounding issues: A poor ground connection can affect the high beams. Make sure the ground wires to the headlight assemblies are clean and tight.
5. Headlight Switch:
* Headlight switch failure: While less common, a failing headlight switch can sometimes cause issues where one beam functions, and the other doesn't. This is harder to diagnose at home.
Troubleshooting Steps:
1. Start with the easiest: Check the bulbs first. They're the cheapest and easiest to replace.
2. Then check the switch: Wiggle the high beam switch while observing the headlights.
3. Next, check the relay: Swap the relay with a similar one (if possible).
4. Finally, inspect the wiring: This is the most time-consuming but often reveals the root cause.
If you're not comfortable working with car electrical systems, it's best to take your Camaro to a qualified mechanic. Incorrect wiring can cause damage to your car's electrical system. A wiring diagram specific to your 1992 Camaro RS will be invaluable during this troubleshooting process. You can often find these online through forums or repair manuals.
