1967 Mustang Wiring Diagram | Free Wiring Diagram Variety of 1967 mustang wiring diagram. A wiring diagram is a streamlined traditional photographic representation of an electrical circuit. It shows the parts of the circuit as simplified shapes, as well as the power and also signal connections between the devices.Author: Ricardolevinsmorales 1967 Mustang Wiring and Vacuum Diagrams - Average Joe 1967 Mustang Wiring and Vacuum Diagrams. 1967 Mustang Instrument Panel. Pictorial. Instrument cluster connections, wiper switch, headlamp switch, ignition switch and lighter . 1967 Mustang Ignition, Starting and Charging. Pictorial and 6-Cylinder Ignition Schematic or Schematic.