The capacitor wiring method inside the pick switch is that the two on the left side of the pick switch are three-phase electricity, and the two on the right side are single-phase electricity, which is accessed from the right side. The red wire and a wire of the capacitor are connected together to the live power line, the yellow wire is connected to another wire of the capacitor, and the green wire is connected to the neutral power line to complete the capacitor connection.