Your best resources are:
1. Your Owner's Manual: This is the most reliable source. The manual should have detailed diagrams and descriptions of both fuse boxes, specifying what each fuse protects.
2. The Fuse Boxes Themselves: Often, the inside of the fuse box cover will have a small diagram printed on it. This might not be comprehensive, but it's better than nothing.
3. Online Ford Parts Websites: Sites like FordParts.com or other authorized Ford parts dealers' websites sometimes offer diagrams as part of their parts catalog. You might need to navigate through the specific year, model, and trim level to find the diagrams. However, these are usually geared toward parts ordering and may not always have clear diagrams.
4. Repair Manuals (like Haynes or Chilton): These manuals often contain detailed diagrams and information about the fuse boxes and electrical systems. They are readily available online and at auto parts stores.
Important Note: Before working with any electrical components, always disconnect the negative battery terminal to prevent shorts or injury.
