Here are the best places to look for a wiring diagram:
* Your car's repair manual: This is the most reliable source. A factory service manual (often available online as PDFs or through retailers specializing in automotive repair manuals) will have detailed wiring diagrams specific to your vehicle's year and model. Look for sections on the charging system or alternator.
* Online automotive parts websites: Websites like AutoZone, Advance Auto Parts, Napa Auto Parts, etc., often have online catalogs where you can input your vehicle's year, make, and model. While they might not have a complete wiring diagram, they might have diagrams showing the alternator connections. Look for the alternator's specifications or installation instructions; sometimes these include a basic wiring schematic.
* Online forums dedicated to Oldsmobile vehicles: Forums such as those on sites like Classic Oldsmobile or others dedicated to your specific Oldsmobile model year will likely have experienced members who have tackled similar alternator issues. Searching the forum for "alternator wiring diagram" or similar terms, along with your year and model, might yield relevant results, including photos of actual wiring setups.
* Haynes or Chilton repair manuals: These are generally less detailed than factory service manuals but may still provide a simplified wiring diagram or at least give you a general idea of how the system is connected.
Important Note: When working with automotive electrical systems, always disconnect the negative battery terminal before starting any work to prevent accidental short circuits. If you're not comfortable working with car electrical systems, it's best to consult a qualified mechanic. Incorrect wiring can damage the alternator, other components, or even cause a fire.
