The best approach is:
1. Consult your owner's manual: This is the most reliable source. It will have a fuse box diagram showing the location and function of each fuse.
2. Locate the underhood fuse box: It's usually a large plastic box under the hood, often near the battery.
3. Examine the fuse box diagram: Find the fuse labeled "dome lamp," "courtesy lamps," or a similar description related to interior lighting. The amperage rating will also be listed.
4. Check the fuse: Visually inspect the fuse for a broken filament (a visible gap or darkened area).
If you can't find it using the owner's manual or the labeling is unclear, you might need to consult a Jeep repair manual or a qualified mechanic. Improperly replacing fuses can cause further damage, so proceed with caution.