Here are the best places to find the correct diagram:
* Your Owner's Manual: The most reliable source. It should be specific to your vehicle's year and model.
* Ford's Website (or a reputable Ford parts website): Ford's official parts websites often have diagrams or repair manuals available for purchase (or sometimes free downloads, though this is less common). You might need your vehicle's VIN (Vehicle Identification Number) for precise results.
* Repair Manuals: Haynes, Chilton, and other automotive repair manual publishers offer comprehensive manuals specific to your year and model of vehicle. These manuals will have detailed diagrams and instructions. They're readily available online and at auto parts stores.
* Online Forums: Websites and forums dedicated to Ford vehicles (like forums specific to trucks or cars from that era) are often great resources. Searching the forum with your year, model, and engine details will likely turn up someone who's already posted the diagram or can direct you to one. Be sure to confirm the information's accuracy with other sources.
* Auto Parts Stores: Many auto parts stores (like AutoZone, Advance Auto Parts, etc.) may have access to wiring diagrams through their computer systems if you provide them with your vehicle's year, make, model, and engine.
Important Note: When working with the ignition system, always disconnect the negative battery terminal before starting any work to avoid accidental shocks or damage. Miswiring the spark plugs can severely damage your engine. If you're not comfortable working on your vehicle's ignition system, it's best to have a qualified mechanic perform the work.
