To find the correct fuses, you'll need to:
1. Locate the underhood fuse box: This is usually a black plastic box located near the battery in the engine compartment.
2. Open the fuse box cover: This will reveal a diagram showing the location and amperage of each fuse.
3. Consult the fuse box diagram: The diagram will identify the fuses related to the wipers (they'll likely be labeled something like "Windshield Wiper Motor" or "Wiper Motor").
Without the diagram, it's impossible to give you the exact location within the fuse box. Your owner's manual will have the most accurate diagram for your specific truck's model. If you don't have the manual, you can often find a digital copy online by searching "[your year] Ford F-150 owner's manual."