This 45 Watt Plug In Transformer (18VDC) includes a 10 ft. extension cable to run to your first lighting fixture , Can be used with any Archipelago Lighting Plug-N-Go Low Voltage Lighting System. Use as a replacement transformer for existing Plug-N-Go systems, or build your own system by selecting desired lighting fixtures, making sure to keep total wattage under 45 Watts. Please watch the Easy Installation Video, or consult your owners manual for additional information.