* Ford Parts Websites: Check websites like FordParts.com or other online Ford parts dealers. While they primarily sell parts, some may offer diagrams as part of their catalog or parts lookup systems. You might have to navigate through a parts breakdown to find the vacuum system related components.
* Haynes or Chilton Repair Manuals: These manuals often contain detailed vacuum diagrams. Look for a manual specifically for the 1984 Mustang SVO. These are available at auto parts stores, online retailers like Amazon, and sometimes at libraries.
* Online Forums Dedicated to Ford Mustangs: Forums like Mustang forums (search "Mustang forums 1984 SVO") are a valuable resource. Members often share knowledge, and someone might have a scan or photo of a vacuum diagram they can share. Be prepared to search thoroughly and politely request help.
* eBay: Occasionally, you might find original Ford service manuals or reproductions on eBay. These are usually the most accurate sources.
Important Note: Vacuum diagrams for even similar years and models can vary slightly based on options and engine configuration. Be sure to confirm you have the correct diagram for your specific car. If you can provide the engine code (found on a sticker usually on the radiator support or in the engine compartment), that would make searching more accurate.
