BUILT IN IC DRIVER The built-in intelligent IC driver provides better current stability and heat dissipation, extending the life of the 1157 LED bulb to 50,000 hours. HIGH QUALITY 2835 CHIPS The newly upgraded LED beads are a further leap forward in terms of brightness and area, providing you with a brighter view. Universal 1157 Socket Universal 1157 dual contact point plug. plug and play, easy to install. Note: 1.If you have halogen bulb, you can refer to methods 1, 2 and 3 to find the correct part number you need. 2.If you have after market light, bulb fitment guide may not accurate, you can refer the method 3 to find out the correct part number you need. 3.The "Note/!" is very important, it will tell you the applicable positions. For example, "Note: Fit for Brake/Signal/Tail light.", it means the led bulbs only fit for these lights, if you want a reverse light, the bulbs won't fit. 4.If you have any questions or encounter any problems with your order, please let us know or ask in the “Customer Q&A”.