In general, neon lights have 1 1 connectors, the first one on the far right is connected to the live wire, and the two on the left are connected to the 220V neutral wire and live wire (casually, these two connectors are not+-), and the other eight connectors are connected to the transformer of neon lights respectively. There are two 220V connectors on the transformer, of which * * uses the zero line, and the live wire is connected from the scanner.