The video shows a person's hand holding a red wire and plugging it into a black tube. The tube is part of a car's engine, and the person is using the wire to test the tube's functionality. The person's hand is steady, and the wire is inserted into the tube with precision. The engine in the background is running, indicating that the tube is being tested while the car is in use. The video is shot in a close-up view, focusing on the hand, the wire, and the tube. The colors in the video are muted, with the red wire standing out against the black tube and the metallic engine.