1978 Ford Bronco Ignition System Diagram - Coil, Distributor & Module Wiring

This document is a pictorial schematic of an automotive ignition system, uploaded to a 1978 Ford Bronco gallery under the filename 'Ignition Coil.gif'. It is a line-art illustration showing the major ignition system components and their wiring interconnections. Labeled components include the ignition switch (with RUN and START terminals identified), the ballast resistor, the start bypass wire, the ignition coil (with its BAT terminal and TACH TEST connector called out), the distributor cap, rotor, adapter, distributor body, a spark plug with plug wire and boot, the starter relay, the battery, and the ignition module. The drawing traces the wiring harness routing from the ignition switch through the ballast resistor to the coil, connections between the battery and starter relay, and the harness connectors joining the distributor and ignition module. The exploded view of the distributor cap, rotor, and adapter shows how those pieces stack onto the distributor. No part numbers, wire colors, torque values, model years, or engine applications are printed on the diagram itself. A reader can learn the overall layout and interconnection of a module-controlled (electronic) ignition system with a ballast resistor and start-bypass circuit, useful for identifying components and understanding wiring routing during diagnosis or repair.