At the moment the chassis moves from the paint booth to the electrical integration station, the MC‑type female connector is pressed onto the pre‑terminated wiring harness, establishing the first permanent link between the vehicle’s body and its control electronics. The socket holds the pins of the harness in precise alignment, allowing the downstream assembly robot to snap the power module, sensor clusters and lighting units onto a secure, vibration‑tolerant interface. Because the connector can be mated and demated quickly, technicians can verify continuity with a handheld tester before the door modules are installed, reducing re‑work time on the line. Its design also accommodates the high‑density wiring typical of modern power‑train and driver‑assist systems, so the same connector family is reused across engine control units, infotainment boards and battery‑management packages. In a nearby plant that builds electric‑drive components, the same female socket provides the same reliable coupling for high‑current battery cables, illustrating its versatility without leaving the automotive domain.