1975 Chevrolet Light and Medium Duty Truck Wiring Supplement

The 1975 wiring supplement for Chevrolet light- and medium-duty trucks, showing circuits that changed for the model year.

Use it to trace circuits by wire color and gauge, locate connectors and components, and track down electrical faults in original or restored harnesses.

This book is a supplement: it records what changed for the year and is meant to be used alongside the base manual, not on its own.

This 13-page copy is free to read online. Use the page box, thumbnails and contents in the reader to jump to the section you need.