The video shows a person using a multimeter to test the wires of a model train set. The person is holding the multimeter in one hand and a wire in the other hand. The model train set has multiple tracks and there are model trains on the tracks. The person is wearing a blue shirt and is standing in front of the model train set. The multimeter has a blue and yellow color scheme and the person is using a red wire to test the wires of the model train set.