1157 BAY15d, 4W LED light,1157 dual filament, 12V, Pure white

1157 led light bulb replacement, BAY15d ( double contact bayonet DC Marine Base)LED turn signal and back-up light bulb for both motorbikes and cars, This bulb is using 30 PCS 5050 SMD LED as 1157 dual filament replacement, Double contact  have dofferent watt and brigtness. These are SUPER EASY to install. There is no modification needed at all. Since LED lamp has + and - terminals, so if there is no lighting after inserting it into socket, just simply change the terminal oppositely.

Special Note: If you are using these LED bulbs for turn signal lights, you might need to add a pair load resistors to prevent hyper flashing or malfunction problem.