Models Covered: 1978 Ford F-100, F-150, F-250, F-350, Bronco, and Econoline.
Compiled from the original Ford Motor Company publication (Course 0338-101, Form FPSD-365-247, dated SEP 77), this OEM resource provides complete, high-resolution 1978 Ford truck wiring diagrams and schematics for diagnostics and repair. Designed for technicians and restoration enthusiasts, this guide delivers everything necessary to trace circuits and fix electrical issues across the entire model lineup. (Note: For full mechanical, powertrain, chassis, and body service procedures, please refer to the companion 1978 Ford Truck Shop Manual).
Comprehensive Electrical Circuit Coverage
Features detailed, full-vehicle electrical layouts for the ’78 F-Series, Bronco, and Econoline. Instead of guessing, you can easily troubleshoot specific systems using detailed schematics for the F-100 instrument cluster, or trace the exact routing for an F-150 alternator, ignition switch, and neutral safety switch. The manual also includes complete wiring paths for lighting and accessories, helping you repair F-150 and F-250 tail light wiring, directional signals, headlamps, and factory radio connections.
Includes Supplemental Factory Technical Extracts
In addition to complete standalone electrical schematics, this publication features valuable reference extracts taken directly from official Ford Motor Company service materials:
- 1978 Ford Truck Shop Manual Vol. 3—Electrical (FPS 365-127-78C, Dated Sep. 77): Covers factory diagnostic steps, circuit protection, switch tests, and lighting system operations.
- 1973/79 Truck Master Parts and Accessories Catalog Extracts (Sections 103 thru 145, FPS-8097-A, Dated April 1980): Provides high-detail electrical part illustrations, exploded component views, connector layouts, and harness routing diagrams.
- Ford Training Course 13001, Vol. 68, S7 — “How to Read Wiring Diagrams”: Official Ford technician reference guide covering wire numbering and color-coding, 2-wire vs. single-wire circuits, ground paths, diagnosing open circuits and shorts, series/parallel circuit breaks, splices, switches, relays, quick disconnects, and wire-tracing hints.
- Author / Publisher: Ford Motor Company / Forel Publishing Company, LLC
- ISBN: 9781603712064
- Format: PDF (Digital Download; Immediate Delivery)
- Page Count: 600 pages
- [📄 View a Product Sample PDF]
Price: $16.95
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