It’s to harda couple of lego pieces with some LED light charged for $20. Way over price. Need to go to website to get instruction. But website is printed as red color in the black background. impossible to read. Amateur company produced "trap" product to get kid's money.Unlike most other Lego LED kits, the lights on this kit came mostly preassembled. That is, it was just one string of lights already attached to bricks which you just insert/replace in your model in the proper order and location. The string still needed to be connected to the battery pack, but with the one string setup it was pretty easy to figure out how things went together. The connectors are small though, so tweezers are recommended. There was no manual included in the box but you were directed to an online manual. The simplified one string setup limited your build options so you couldn't be creative and change things around or use it in another model.I like the idea of this and they look pretty cool once they are installed. They are hard for kids to figure out. It took a lot of time, and I almost gave up. The trick is to add the lighting as you are building. If you have the time and are willing to do the work to install these, go for it.This set makes my Lego modular set looks beautiful. Installation needs more time but it did arrive on time.I ordered this with the intention of adding to a Lego my daughter already owns & completed. When I ordered it, the picture shown was for the set we own, but the picture changed and the kit changed at time of order. This has happened before on other items. The picture & description is completely different or changed in some way. I was so excited to give it to her, but truly disappointed when it wasn't even the correct one.