This light kit is NOT a part of Lego bricks. Package NOT contains the Legos. This Led light kit is to light up and brilliant your models in the dark. All accessories are made from safe ABS material without any odor. Bright your bricks in the dark to enhance the children's imagination and creativity thinking. Install this LED lighting kit to illuminate your lego Ultimate Adventure Castle 43205 building blocks model set in the dark, makes it unique and spectacular. High quality wires High-quality LEDs and inner copper wire makes it more heat-resisting and better conductivity. Easy to install Stick the light on your bricks is the direct way to add lights. Follow the online instruction to install step by step. Safe and durable All LEDs have uniform light pattern and the cable connectors fit nicely together. 5V Low-Voltage can be anti-heat and anti-burning, and bring you a safer experience. Read more We provide detailed assemble instructions for the lighting build, You can assemble follow our instructions step by step. Don't be frustrated and never give up if some difficulties occurred during the installation process. The final result will make you feel that everything is worth it. How to get the video? Step1: Type the website we provided in instruction guide Step2: Type the SKU on the back of the package Step3: Click and watch installation instruction video WARM TIPS We suggest our customer built the light set while you are building the model. All lego sets show in picture are not included. Read more USB or battery pack to supply power You can connect the USB cable with a power bank, a laptop, an USB-socket or an wall adapter. Or install 3*AAA batteries in the battery pack to power on the light kit. It is very convenient to supply power for your light kit to show your shinning building model in any place. Read more After receiving the parcel, please confirm if there are any missing parts and test whether every lamp pellet can light up. Read more