* Headlight switch: This is the main control, located on the dashboard. It sends power to the rest of the system.
* Wiring harness: This runs from the switch, through the firewall, and to the headlights themselves. Problems here are common causes of headlight issues.
* Headlight relay (possibly): Some Cavaliers of this year might have a relay, while others might directly route power through the switch. The relay (if present) would likely be in the underhood fuse box or a separate relay center.
* Headlight itself: The bulb and its socket are integral parts of the headlight function. Failures here are also common.
* Body Control Module (BCM): In some cases, the BCM might influence headlight functions (like daytime running lights if equipped).
Therefore, there's no single "headlight module" to locate. Troubleshooting headlight problems requires checking the switch, wiring, relay (if applicable), and the headlight units themselves. A wiring diagram specific to a 1996 Chevy Cavalier would be the best resource for pinpointing any fault. You can usually find these diagrams online through automotive repair websites or forums.
