Alla Lighting Extremely Super Bright High Power 75W 3157 3156 4757 3757 Amber Yellow LED Lights Bulbs for Turn Signal Backup reverse Blinker Corner Light Lamp Replacement (3157) (Set of 2) LED Type: 15 pieces high power & high quality Osram 5W led chips per bulb. Color: Amber Yellow (Brightest in the world currently(6000K Xenon white & Brilliant Red available, pls search Alla Lighting 3157 75W) Cross Reference:3156 3056 3456 4156 3155 3157 3157A 3156A 3057 3155 3157NA 3357 3457 3457A 4057 4114 4157 4157NA etc Application: Turn signal lights,back up reverse light,blinker light,corner light,side marker lights,etc;for turn signal lights, it may require 50W 6ohm load resistor to avoid hyper flash or malfunction. IMPORTANT Notice :Not compatible with CK sockets,our bulbs come with Standard socket, NOT CK Type, stardard bulbs installed in the CK socket will burn out or no lighting.