Led Christmas lights are wired in a specific way to ensure their safety and proper functioning. Each string of lights contains a set of wires that carry electricity from the plug to the individual bulbs. The wires are typically color-coded, with the black wire representing the "hot" wire and the white wire representing the "neutral" wire. The hot wire supplies power to the lightbulbs, while the neutral wire provides a return path for the electricity to complete the circuit. The two wires are connected to the bulb sockets in a specific pattern, with each socket having two contact points to ensure proper connection and current flow.