1974 C3 Laminated Chassis Wiring Harness Diagram VWD7400
Keep your 1974 Corvette’s electrical system in top condition with this fully laminated wiring harness diagram. Reproduced from original GM service materials and reprinted with permission, this one-page schematic includes every base model chassis circuit in a large, easy-to-read format. The diagram clearly illustrates wire color, gauge, circuit number, and terminal position within connectors, along with to-and-from routing locations.
Unlike multi-page manuals, this version displays the entire layout on a single 22" x 17" laminated sheet—ideal for shop or bench use. It’s resistant to oil, grease, and fingerprints, making it the perfect reference during diagnosis, repair, or restoration of your 1974’s electrical system.
Features
• Reproduction of original GM 1974 base model chassis wiring schematic
• Shows wire color, gauge, circuit number, and connector pin locations
• Includes routing path from origin to endpoint components
• Printed on one large 22" x 17" laminated sheet—no page flipping
• Laminated on both sides for easy cleaning and durability
• GM licensed product—accurate and restoration-ready
Dimensions and Weight
• Dimensions: 22 inches wide × 17 inches tall
• Material: Fully laminated double-sided sheet
• General Motors Licensed Product
Because Details Matter
Whether you're diagnosing an issue, rebuilding the original harness, or verifying circuit connections, this laminated schematic provides the accuracy and durability you need to keep your 1974 Corvette wired the right way.
Also known under these part numbers: (For reference only)