Here are a few sources where you might be able to find the spark plug wire diagram:
1. Haynes Repair Manual: This manual is a popular choice for DIY car repair enthusiasts and can be purchased online or from automotive retailers. It contains step-by-step instructions and illustrations for various maintenance and repair procedures, including spark plug wire replacement.
2. Saturn Service Manuals: Saturn dealerships or authorized repair shops may have access to the official Saturn service manuals, which provide comprehensive technical information and diagrams specific to Saturn vehicles.
3. Online Forums and Websites: There are numerous automotive forums and websites dedicated to Saturn vehicles, where you might find shared information and diagrams contributed by other Saturn owners and enthusiasts.
4. Auto Parts Retailers: Some auto parts stores may have access to diagrams and technical information for specific vehicles. Check with local auto parts retailers to see if they have any resources available for the 1998 Saturn.