* Your Owner's Manual: The most reliable source. Check the back or a dedicated section of your owner's manual. It should have a detailed diagram showing the fuse locations and what each fuse protects.
* Online Repair Manuals: Websites like Haynes.com or Chilton.com often sell digital or downloadable repair manuals that include fuse box diagrams. These are more comprehensive than owner's manuals. Be sure you select the correct year and model of Mustang.
* Ford's Website (Possibly): While Ford's website may not directly host the diagram for an older vehicle like a 1991 Mustang, searching their parts site or support section may yield some results or links to resources.
* Online Forums: Searching Mustang-specific forums (like Mustang Forums or others) may bring up threads where someone has posted a picture or scan of their fuse box diagram. However, be cautious and cross-reference with other sources to ensure accuracy.
* Auto Parts Stores: Local auto parts stores (like AutoZone, Advance Auto Parts, or NAPA) may have access to repair manuals or diagrams you can view in the store.
Important Note: There might be more than one fuse box in your 1991 Mustang. One is typically located under the hood, and another might be inside the car, often under the dashboard. The diagram in your owner's manual or repair manual should specify the location of each fuse box.
