Wiring Diagrams — Ford F-150 1975-1979

Technical Reference

Member-uploaded diagrams & documents for this generation. AI-classified; community-verified where badged.

Wiring Diagrams

• Ford 2G Alternator Wiring Diagram - Regulator Terminals, Wire Colors & Fuses
  This is a color-coded wiring diagram for the Ford 2G alternator charging system, produced by RJM Injection Tech (copyright 2005). It shows the internal layout of the 2G alternator, including the stator, rectifier…
• Ford 3G Alternator Wiring Diagram - Mega Fuse, Regulator & Charge Lamp Circuit
  This document is a wiring diagram for the Ford 3G alternator charging system. It shows the alternator with its internal components: the stator, rectifier (spelled 'RECTFIER'), and internal regulator containing sensing…
• Ford F-150 Charging & Starting Wiring Diagram (With Gauges) - Ammeter, Alternator
  This document is a hand-drawn style wiring diagram titled "With Gauges," showing the charging and starting circuit for a Ford truck equipped with gauges (ammeter) rather than warning lights. It illustrates the battery…
• Ford Power Window Wiring Diagram - Dash & Key Switch, Motor Wire Colors
  This document is a power window wiring circuit diagram showing the electrical path for a single window motor controlled by two switches. Power comes from a source that is 'Hot at all Times' through Circuit Breaker 12…
• Hand-Drawn 120V 3-Way Switch & Light Box Wiring Diagram Sketch
  This is a hand-drawn electrical wiring diagram sketched in ink, showing a household-style 120-volt lighting circuit rather than a vehicle-specific schematic. The drawing depicts a multi-way (three-way) switch…
• Hand-Drawn 3-Way Switch Wiring Diagram - 120V Stairway Light Circuit Sketch
  This document is a hand-drawn wiring sketch (pen on paper) showing a 120-volt light circuit controlled by two switches (a three-way switch arrangement). At the bottom is a box labeled 'Panel,' from which a 120V Black…
• Hand-Drawn 3-Way Switch Wiring Diagram - 120V Light Circuit with Two Switch Boxes
  This document is a hand-drawn wiring diagram (pen on paper) depicting a 3-way switch lighting circuit, apparently for a stairway light. It shows two switch boxes, each containing a 3-way switch, a light fixture in a…
• 3-Way Switch Light Circuit Hand-Drawn Wiring Diagram - Travelers, 120V Hot, Neutral
  This is a hand-drawn wiring schematic (pen on paper) showing a standard three-way switch lighting circuit for 120-volt household wiring — not an automotive diagram. At the top of the page a light fixture is sketched…
• Auto-Dimming Inside Rearview Mirror Wiring Diagram - Temp Sensor & Backup Lamp
  This document is a wiring diagram (schematic) for an inside rearview mirror circuit, apparently an auto-dimming (electrochromic) mirror with an ambient air temperature display function. It shows power feeds from two…
• 1978 Ford F-150 Alternator & Voltage Regulator Wiring Diagram - Wire Colors
  This is a hand-drawn (computer-illustrated) wiring diagram showing the charging system wiring between a Ford voltage regulator (VR) plug and the alternator. On the left, the VR plug connects via a green wire and a…