These Torchstar LED ceiling lights are amazing. I have used many different brands in my renovations and none can match the ease of installation and quality. They have a fold-out J-box with the hot, neutral, and ground wires already connected to a four-pin electrical connector. Simply connect your existing cables to the appropriate four-pin connectors, plug into the box and close the box. I mean these things are whistles! I haven't been this happy with a purchase in a long time. Torchstar has a new customer for life!