Why choose Mililier LED light?(LED Light Only, Not Building Block Kit) Each light set of Mililier LED light is carefully crafted with tiny connecting wires and bright lights to better add a sense of ambiance while keeping your Building Block kits on display. Choose Mililier LED light can decorate your Building Block kits, light up your Building Block kits, and make them stand out in your room. DIY design light sets do not necessarily have to follow the instructions. The lights can be assembled elsewhere in the kit to update your visual experience, depending on your different needs. Warning: 1.Power should be less than 5v, it is very helpful to the light; 2.Not for children under six; 3.Before installation, please prepare tweezers and have a test of the light to make sure all can light up. If the lights do not work, please contact us; 4.LED lights damage easily. Please take it as carefully as you can; Using instruction: 1.Connect to power bank or battery box and light up your building blocks; 2.When Installing, please make sure that the wire is hid between two knobs of the plate, but not be pressed by the bricks directly; 3.Remove the side of the street light brick ,and Hide the cables at the bottom of the building block; 4.Hide the spare wire under the bricks; 5.Led plates is always installed on the ceiling; Troubleshooting methods for multi-function board and remote control: 1. Check whether the remote control has installed batteries (the lighting kit does not come with batteries); 2. Check whether the battery is installed reversely and whether the battery power is sufficient; 3. Check whether the LED on the top of the remote control emits red light; 4. Try to press the corresponding button on the remote control forcefully and hold for 1-2 seconds.