Ford C115 In-Line Connector Pinout - 42-Pin C115F/C115M Circuit & Wire Colors

This document is a connector pinout reference for the C115 in-line connector pair, showing both the female side (C115F) and male side (C115M) of a 42-pin bulkhead-style in-line connector. Each connector face is illustrated with numbered cavity positions (pins 1–42), including a few darkened/highlighted cavities (pins 13, 23, and 32 appear filled on the drawings). Below each connector drawing is a pin-to-circuit table listing all 42 pin positions with their assigned circuit numbers and wire color codes, e.g., pin 1 = circuit 16 (R/LG), pin 5 = circuit 238 (DG/Y), pin 34 = circuit 570 (BK/W), pin 42 = circuit 36 (Y/W). Pins 13, 23, and 32 are shown with dashes, indicating no circuit is assigned to those cavities. The female and male tables are essentially identical, so a reader can match wires across the connector interface. This reference is useful for tracing wiring, diagnosing broken or corroded connections at the C115 in-line connector, and identifying which circuit number and wire color occupies each cavity. Uploaded to a 1990 Ford F-250 gallery; the document itself does not state a year, model, or engine applicability.