* Variety of Engines: Chevy vans in 1967 could have been equipped with many different engine options (small block, big block, etc.). Each engine has its own unique wiring setup.
* Modifications: Over the years, vehicles often have modifications done to their electrical systems. This makes finding a diagram for a specific van nearly impossible without knowing its full history.
Where to Search for a Wiring Diagram:
1. Original Service Manuals: The best resource would be the original service manuals for your specific year, make, and model of Chevy van. These manuals are sometimes available online (eBay, Amazon) or through specialized automotive document retailers.
2. Online Forums: Forums dedicated to classic Chevrolet vehicles (like ChevyTalk, Chevelles.com, or other vintage car forums) might have dedicated members who can help or point you in the right direction.
3. Auto Parts Stores: Some auto parts stores might have access to wiring diagrams based on the vehicle's VIN number, but this is not guaranteed.
4. Specialty Wiring Diagram Sites: Websites like AllData, Mitchell 1, or Chilton offer subscriptions to their repair information databases, which often include wiring diagrams.
5. Local Mechanics: A knowledgeable mechanic specializing in classic vehicles may have access to wiring diagrams or can help you decipher your van's electrical system.
Important Tip: Before attempting any electrical work, always disconnect the battery to avoid electrical shock.
