Ford Bronco Alternator Charge Wire Test - C202 Connector Pin 42 LG/R Diagram
Wiring diagram showing C202 connector charge wire to the alternator, with DVOM and ground connections for charging voltage-drop testing.
This document is a simple hand-drawn/computer-drawn wiring test diagram showing how to check the alternator charge wire circuit on a Ford vehicle. On the left is a detailed illustration of the C202 connector, described as the firewall connector (male side), with its pin grid shown and 'TOP' marked for orientation. A red test lead runs from Pin 42 of the C202 connector — identified as the LG/R (light green/red) wire to the alternator — up to a DVOM (digital volt-ohm meter). The DVOM's other lead goes to Ground. From Pin 42, the charge wire (colored yellow-green in the drawing and labeled 'Charge wire LG/R') routes through a weatherpack connector and continues to the Alternator, drawn as a box on the right. The diagram teaches a reader which pin (Pin 42) and wire color (LG/R) carry the alternator charge/sense signal through the C202 firewall connector, where the inline weatherpack connector sits in that circuit, and how to hook up a DVOM between Pin 42 and ground to test continuity/voltage on the charge wire. It appears to be page two of a two-part 'Charge diagram' set uploaded for a 1992 Ford Bronco.
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Frequently asked questions
- Which pin on the C202 connector is the alternator charge wire?
- Pin 42, which is the LG/R (light green/red) wire going to the alternator.
- What is the C202 connector in this diagram?
- It is the firewall connector, male side, shown with its pin grid and 'TOP' marked for orientation.
- How is the DVOM connected to test the charge wire?
- One DVOM lead connects to Pin 42 of the C202 connector (the LG/R wire to the alternator) and the other lead goes to ground.
- Is there an inline connector in the charge wire between the firewall and alternator?
- Yes, the diagram shows a weatherpack connector in the LG/R charge wire between the C202 connector and the alternator.
- What color is the alternator charge wire in this diagram?
- LG/R (light green/red), labeled both at Pin 42 and along the run to the alternator as 'Charge wire LG/R'.
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