To find it, you need to consult your owner's manual. The manual will have a diagram of both fuse boxes showing the location of each fuse and what it protects. The fuse is likely labeled "windshield washer" or something similar.
If you don't have the owner's manual, you can often find a PDF version online by searching for "[Year] Ford Explorer owner's manual PDF". Make sure you select the correct year and model (Sport, Limited, etc.).
Failing that, a search online for "1998 Ford Explorer fuse box diagram" might provide a diagram you can use to find the fuse yourself. However, always use the diagram in your owner's manual as the most reliable source.
