* Under the hood in the fuse box: This is the most common location. The fuse box is typically located near the battery. Look for a relay that's clearly marked or find a diagram inside the fuse box cover to identify the horn relay.
* In the passenger compartment fuse box: Less common, but some Cavaliers might have it inside the passenger compartment fuse box, usually located under the dashboard.
To find it definitively:
1. Consult your owner's manual: This is the best resource. It will have a diagram of your car's fuse box(es) showing the location of all relays, including the horn relay.
2. Use a wiring diagram: A wiring diagram for your specific year, make, and model Cavalier (including engine and trim level) will show the exact location and circuit of the horn relay. You can find these online through repair manuals or automotive parts websites.
3. Visually inspect: If you can't find it in your manual or a diagram, carefully examine both fuse boxes. Relays are usually square or rectangular and often have markings that indicate their function.
Important Note: Before working on any electrical components, disconnect the negative terminal of your car battery to prevent accidental shorts or shocks.
