Comprehensive Guides:
* Electrical repair manual and wiring diagrams for all brands of cars (Haynes)
* Automotive Electrical Systems and Diagnostics (Delmar Cengage Learning)
* Car electrical: theory, diagnostics and repair (Pearson)
Guides for specific brands and models:
Ford:
*Wiring Diagram and Troubleshooting Guide Ford F-Series (Mitchell 1)
* Ford Mustang Electrical System Manual (Motorbooks)
General Motors:
* Chevrolet Silverado Electrical System Repair and Troubleshooting Guide (GM Service Information)
* Cadillac CTS Wiring Diagram and Troubleshooting Guide (GM Service Information)
Toyota:
*Electrical repair manual and wiring diagram for Toyota Camry (Toyota Motor Corporation)
* Toyota Prius Electrical System Manual (Toyota Motor Corporation)
Honda:
*Honda Civic Electrical Repair and Wiring Manual (Honda Motor Company)
* Electrical Diagram and Troubleshooting Guide for Honda Accord (Honda Motor Company)
Other guides:
* Automotive Electrical Systems and Components (Automotive Technician Training Series)
* Vehicle Lighting and Electrical Systems (Today’s Technician Series)
* How to Read Car Wiring Diagrams (Car Craft)
Online resources:
* [AllData](https://www.alldatadiy.com/): Provides technical data and wiring diagrams for various car brands.
* [Mitchell 1](https://www.mitchell1.com/): Provides software for vehicle diagnostics and repair, including electrical circuit diagrams.
* [AutoZone](https://www.autozone.com/): Offers free wiring diagrams for select vehicles.