This manual provides comprehensive electrical wiring diagrams for the 2010 C30, S40, V50, and C70 models. These vehicles are known for their Scandinavian design, safety innovations, and reliable performance, often featuring sophisticated electronic systems. This Electrical Wiring Diagram (EWD) manual delves into the intricate electrical architecture that underpins these vehicles, offering detailed schematics for a wide array of systems, from engine management and power delivery to lighting, climate control, and safety features like airbags and ABS. It is an essential resource for understanding and maintaining the complex electrical networks within these automobiles. The purpose of this manual is to serve as a definitive guide for diagnosing and repairing electrical issues across the specified models. It meticulously details fuses, relays, wiring harnesses, connectors, and junction points, providing component illustrations and pin assignments crucial for accurate troubleshooting. By offering in-depth coverage of engine control, transmission systems, body electricals, and instrumentation, this resource empowers owners, independent repair shops, and automotive technicians. Users can easily navigate complex circuits, identify specific components, and understand system interconnections, facilitating efficient and effective electrical maintenance and repair.