4-Pin Connector Pinout Diagram | Technical Reference Guide #139329 (License: Personal Use)

This schematic illustrates a rectangular 4-pin electrical connector with four evenly spaced gold-plated contacts on the underside, each labeled numerically from left to right as 1, 2, 3, and 4. The black top section likely represents the insulating housing or cable entry point, while the gray body denotes the connector shell. Such diagrams are essential for ensuring correct polarity and signal routing in low-voltage DC applications like LED strips, sensors, or power adapters.

Used in electronics documentation, repair guides, datasheets, and DIY tutorials where users need to verify pin assignments before connecting components; matches intent for technical troubleshooting, wiring verification, or educational purposes.