In the video, a person is seen holding a green wire in their left hand and a metal connector in their right hand. The person is using a soldering iron to solder the wire to the connector. The soldering iron is heated to a high temperature, and the person applies it to the metal connector, melting the solder and creating a strong bond between the wire and the connector. The person then tests the connection by pulling on the wire, ensuring that it is securely attached to the connector. The video provides a clear view of the soldering process, highlighting the importance of using the correct temperature and technique to achieve a strong and reliable connection.