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1979 Ford Bronco Alternator Wiring Harness - Wire Colors & Regulator Plug Photo

Annotated wiring harness photo labeling wire colors and connection points such as regulator, starter solenoid and alternator.

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This document is a labeled photograph of an alternator/voltage regulator wiring harness laid out on white paper, uploaded to a 1979 Ford Bronco gallery as "Alternator Wiring.jpg." Rather than a schematic drawing, it shows the actual physical harness with white text callouts identifying each component and wire color. Labeled components include the Radio Capacitor, the (voltage) Regulator connector (a blue multi-pin plug), the Starter Solenoid ring terminal, two intermediate connectors (Plug #1 and Plug #2), and three Alternator Connections at the end of the harness. Wire color callouts identify individual conductors: Green/Red, Orange, Yellow, White/Black, Orange/Red, Yellow/Black, Black/Yellow (thick), Black/Red (thick), and a Black/Red loop (thick). A reader can use this image to identify how the alternator-to-regulator harness is routed and which wire colors run between the regulator plug, the starter solenoid eyelet, the intermediate plugs, and the three alternator terminals — useful when repairing, replacing, or re-pinning a charging-system harness. The document contains no printed year, model, part numbers, torque values, or fuse data; all information is limited to the callout labels visible in the photo.

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Frequently asked questions

What wire colors are shown in this alternator wiring harness?
The labeled wire colors are Green/Red, Orange, Yellow, White/Black, Orange/Red, Yellow/Black, Black/Yellow (thick), Black/Red (thick), and a Black/Red loop (thick).
What components does this alternator harness connect to?
The callouts identify the Radio Capacitor, the Regulator connector, the Starter Solenoid (ring terminal), Plug #1, Plug #2, and three Alternator Connections.
How many connections go to the alternator on this harness?
The label reads "Alternator Connections (3)," indicating three connections at the alternator end of the harness.
Which wires are noted as heavier gauge (thick)?
Three are marked thick: Black/Yellow (thick), Black/Red (thick), and the Black/Red loop (thick).
How does the harness attach to the starter solenoid?
The photo shows a ring (eyelet) terminal labeled "Starter Solenoid," indicating a stud-mounted connection at the solenoid.

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