I just received the kit but my LED light does not work.

Have you read the instructions included with your kit?

90% of the time, the problem is that the protective plastic disc under the batteries is not removed. You just need to open the battery door and remove the plastic disc under the batteries. It is put there to protect the batteries.

Please pay attention to the order and polarity of the batteries.

If your light still does not work,  please check out our trouble shooting guide.  It will guide you to do a 60 sec fix with pictures.