cciyu 4X 3157 White 6000K Back Up Reverse Projector Cree+12 SMD Chip LED Lights Bulbs Application: Tail Light, Brake Stop Light, Backup/Reverse Light, DRL, Day Time Running Lights, etc. High Power Clips +Cree Q5 Tail Brake Stop Parking Cross Reference: 3157 3156 3057 3047 3155 335 3155 4114 4057 4157 3057A 3357NA Long Lasting Life:50000+ working hours. Easy installation, just plug & play. Note: Our bulbs come with Standard Base, NOT CK Type. Don't put standard bulbs into CK type sockets. It may pop the fuse or blow the bulb. Or the bulb will light up amber ONLY. Use a electroprobe to check where the two Positive Points locate in your stock socket.You can also buy a pair of standard sockets to modify the wiring.