Description:

Each 3157 switchback bulb powered by 12 pcs high power 5630 led chips, low power consumption but high light output. HD glass lens for stronger light penetration. The 3157/3156 turn signal flashes "amber-off-amber-off" instead of " amber-white-amber-white", much easier to see. ( Most switchback bulbs in the market flash amber-white-amber-white ). 9V to 18V wide-range voltage design, built-in constant intelligent IC driver,no digital and VHF radio signal interference. Aluminum circuit board,high effective heat dissipation. Plug and play easy installation, no polarity design, compatible for both standard and ck socket. Fit socket 3157, 3157A, 3057, 3155, 3157NA, 3357, 3457, 3457A, 4057, 4114, 4157, etc. Constant Current ICBuilt in Constant Current IC, ensure bulbs work in stable condition, provide longer lifespan & Low Power Consumption..