* Under the hood in the fuse box: This is the most common location. The fuse box usually has a cover, and the relay may be labeled or you might need to refer to your owner's manual's fuse box diagram.
* Under the dash: Less common, but possible. Look near the steering column or other electrical components.
* In a separate relay center: Some G20s might have a separate relay center, often located near the battery or under the hood.
To find it:
1. Consult your owner's manual: This is the best starting point. It will have a diagram showing the fuse box layout and may identify the horn relay.
2. Check the fuse box under the hood: Carefully inspect all the relays in the fuse box. Some relays are larger than others; the horn relay is usually a bit larger and may have a horn symbol on it or near its socket. If you have any doubts, don't hesitate to test each one.
3. Visually inspect wiring: Follow the horn wiring harness from the horns themselves. This can help you trace it back to the relay.
4. Use a wiring diagram: A wiring diagram specific to your 1993 Chevrolet G20 van's model and trim level will show the exact location of the horn relay. You can often find these online through automotive repair websites or forums (like GM-Trucks.com). Be sure to get the correct diagram for your specific van's configuration.
If you can't find it after checking these places, consulting a mechanic or an automotive electrician would be your best bet. They have experience locating these components and can help identify the relay quickly and correctly.
