All you need is power! This is the quickest and easiest way to add lights to any project. Set includes two warm white LED Stick-On Lights. Use the individual dimmer controls to regulate light brightness. Add an optional Auxiliary Switch for convenient operation. RoHS compliant Powering Your Light System You will need one Just Plug Power Supply (JP5770) to power up to 50 lights on your light system, or if you want to power your system from a train power pack, purchase Connecting Cables (JP5760). Kit Contents 1 - Light Hub - 3 3/8"l x 1 5/16"w x 7/8"d (8.57 cm x 3.33 cm x 2.22 cm) 2 - Warm White LED Stick-On Lights with 24" (121 cm) cables 1 - CTRL Port Plug installed 1 - Double-sided Mounting Tape - 1" x 2 1/2" (2.54 cm x 6.35 cm) 2 - Mounting Screws Instructions Just Plug™ Lighting System No electrical knowledge or special tools needed...just plug and you're done! The Just Plug™ Lighting System is a quick and easy way to add realism and interest to new and existing layouts and other projects. Individual bulb brightness can be controlled, and the modular design allows for easy expansion. Just Plug is compatible with DCC and works for any scale.