To find the information you need:
1. Locate your owner's manual: This should have a detailed fuse box diagram.
2. Look for "Power Outlet," "Cigarette Lighter," or a similar designation: The diagram will list the fuses and what they control.
3. Note the fuse number and amperage: This will help you find the correct replacement fuse if needed.
If you don't have the owner's manual, you can try searching online for a PDF version specific to your 2003 Lincoln Navigator. Many websites offer free downloads of owner's manuals.
Caution: Always turn off the vehicle and disconnect the negative battery terminal before working with fuses.