* Under the hood in the fuse box: This is the most common location. The fuse box is usually located near the battery. Look for a relay that's marked "horn" or has a horn symbol on it. The relays are often in sockets that are easily removable.
* Under the dashboard: Less common, but possible. This would require some disassembly of the dashboard to check.
* Within a separate relay center: Some vehicles have a dedicated relay center, which might be located in the engine bay or under the dash.
To find it efficiently:
1. Consult your owner's manual: This is your best bet. The manual should have a diagram showing the location of all fuses and relays.
2. Check online forums: Search online forums specific to 1992 Buick Skylarks. Other owners may have already documented the location of their horn relay.
3. Use a wiring diagram: A wiring diagram for your specific Skylark model (you'll need to know the engine and trim level) will show the circuit and the relay's location. You can often find these diagrams online through auto parts websites or repair manuals.
4. Trace the horn wire: If you're comfortable with some basic automotive electrical work, you can trace the wire running from the horn button to find where it connects to the relay. However, be very careful working with electrical systems.
Remember to disconnect the negative battery terminal before doing any work near electrical components to prevent accidental shorts.