C250 Instrument Cluster Connector Pinout - 16-Pin Wiring Diagram & Functions

This document is a connector pinout diagram and table for connector C250 (natural color), which plugs into the instrument cluster. The upper portion shows a drawing of the 16-pin connector with each cavity numbered 1 through 16 and labeled with its circuit number and wire color code (e.g., 640 R/Y, 563 O/Y, 679 GY/BK). Below the drawing, a three-column table lists each pin number, its circuit designation with wire color abbreviation, and the circuit function. Functions covered include B+ input (pins 1 and 10), grounds (pins 2 and 5), engine coolant temperature gauge feed (pin 3), fuel gauge feed (pin 4), ignition switch feed (pin 6), charge indicator (pin 7), Malfunction Indicator Lamp (MIL) feed (pin 8), Transmission Control Indicator Lamp (TCIL) (pin 9), speedometer ground (pin 11), Vehicle Speed Sensor (VSS) signal (pin 12), battery power (pin 13), anti-theft indicator (pin 14), high beam indicator (pin 15), and left turn indicator (pin 16). A reader can use this diagram to identify each instrument cluster connector pin, its wire color, and its function for diagnosing gauge, indicator lamp, or speedometer problems. The document itself does not state a year, make, or model.