To find the horn's fuse, you'll need to consult the owner's manual for your specific 1993 Jeep Cherokee Sport. The manual will provide a diagram of the fuse box(es) locations and what each fuse protects. The horn might be listed as a fuse, or it might be mentioned in relation to a relay.
If you don't have the owner's manual, you can find a digital version online through sites like Jeep's official website (though availability varies), or through online parts retailers who sometimes host them. Searching for "1993 Jeep Cherokee Sport owner's manual PDF" should yield results.
Without the manual, here's a general troubleshooting approach:
1. Check the obvious: Before checking fuses, make sure the horn button is working correctly. If the horn doesn't sound at all, and your lights and other electrical components work, then the problem might be something else.
2. Relay: Look for a relay labelled "horn" or with a horn symbol in the underhood fuse box (usually located near the battery). Relays often click when activated; if you don't hear a click when pressing the horn button, the relay could be faulty.
3. Wiring: Trace the wiring from the horn button to the horn itself. Look for any broken or loose wires.
Remember that working on your vehicle's electrical system can be dangerous. If you're not comfortable doing this yourself, take your Jeep to a qualified mechanic.