To find it:
1. Consult your owner's manual: This is the most reliable source. The manual will have a diagram of the fuse box showing the location of each fuse and what each one controls.
2. Look for a fuse panel diagram on the inside of the fuse box cover: Even without the owner's manual, there might be a diagram printed on the inside of the cover itself.
3. If you can't find it in the underhood fuse block: There might be a secondary fuse box inside the vehicle, often located under the dashboard. Check your owner's manual for the location of this, if it exists.
Important Note: Before working with fuses, be sure to turn off the ignition. If you're unsure about any step, it's best to take your vehicle to a qualified mechanic.