* Ford Parts Dealers (or online parts retailers): This is your best bet, though success isn't guaranteed. Some dealers might have access to microfiche or digitized versions of old Ford service manuals, which would contain the wiring diagram. Try contacting a few Ford dealerships and parts departments, emphasizing that it's for a 1963 F-100. Mentioning the unibody aspect might help them narrow their search. Online parts retailers sometimes list manuals as well.
* Online Ford Parts Catalogs: Several online catalogs specialize in classic Ford parts. While they primarily sell parts, some might offer access to wiring diagrams as supplemental information, or point you to where to find them.
* Classic Ford Clubs and Forums: Joining online forums dedicated to classic Ford trucks (especially those focusing on the 1960s) is highly recommended. Members are a wealth of knowledge, and someone likely has a schematic or knows where to find one. Post your request, including as much detail as possible (engine type, options, etc.)
* eBay or similar auction sites: You might find a reproduction wiring diagram or even an original service manual on eBay or similar auction sites. Be cautious and check seller reviews.
* Specialty Booksellers: Some booksellers specialize in vintage automotive manuals. They might have a service manual for your specific year and model.
* Online Libraries and Archives: Some university libraries or online archives might have digitized versions of old Ford service manuals. This is a long shot but worth exploring.
Important Considerations:
* Unibody Confirmation: Double-check that your truck is indeed a unibody. Ford's F-Series trucks of that era were almost universally body-on-frame. A misidentification could drastically affect your search. Photos would help confirm.
* Engine and Options: The wiring diagram will vary depending on the engine (6-cylinder, V8, etc.) and any factory-installed options (power steering, air conditioning, etc.). Providing these details will improve your chances of finding the correct diagram.
* Reproduction Diagrams: Be aware that reproduction diagrams might not be perfectly accurate. Use them cautiously and double-check against your truck's actual wiring.
Your search will require some persistence, but by exploring these avenues you'll significantly increase your odds of finding the wiring schematic for your 1963 Ford F-100.
