* Factory Service Manual: This is your best bet. A factory service manual (FSM) will have detailed wiring diagrams, along with other valuable repair information specific to your vehicle's year and model. You can often find these online through sites selling automotive repair manuals, or sometimes on eBay or used bookstores. Be sure it explicitly states it's for a 1988 model year.
* Haynes or Chilton Repair Manual: These are more readily available and cheaper than factory manuals, but the wiring diagrams might be less detailed. Again, ensure it covers the 1988 model year.
* Online Automotive Repair Databases: Sites like AllDataDIY or Mitchell 1 offer online access to repair information, including wiring diagrams, often on a subscription basis. These are usually quite comprehensive.
* Local Auto Parts Store: Some auto parts stores (like AutoZone, Advance Auto Parts, or NAPA) might have access to wiring diagrams through their computer systems. They may print one out for you, or offer to look up the information for you. However, their resources may be less comprehensive than a dedicated repair manual.
Important Considerations:
* Engine Size: The wiring diagram will vary slightly depending on the engine size (e.g., 2.5L, 2.8L, 4.3L). Make sure you specify your engine when searching for a diagram.
* Specific Component: If you're only looking for a specific part of the ignition system (e.g., the ignition switch circuit), mentioning that will help narrow down the search.
* Diagram Clarity: Older diagrams can sometimes be difficult to read. Be prepared to spend some time deciphering it.
Remember that working with automotive electrical systems can be dangerous. If you're not comfortable working with electricity, it's best to consult a qualified mechanic.
