Alla Lighting 3157 Newest LED Switchback 2835 28-SMD High Power Dual Color White Amber Xtremely Super Bright LED Lights Bulbs for Turn Signal Lights 3457 4157NA (Set of 2) Newest version 28 pieces high power 2835 LED chips per bulb. Xenon White for parking light/daytime running driving light, Amber Yellow for Turn signal, brightest in the market. Warranty: 1 year hassle-free warranty. Working Voltage: 12V ~ 18V DC Fitment: 3047, 3047LL, 3047K, 3057A, 3057ALL, 3057, 3057ST, 3057K, 3057KX, 3057X, 3057KLCP, 3057LL, 3155, 3155LL, 3157A,3157AK,3157,3157K,3157X, 3157LL, 3157ST, 3157KX, 3157NA, 3157NALL, 3157NAK, 3357A, 3357ALL, 3357, 3357LL, 3357K, 3454NA, 3457A, 3457ALL, 3457AK, 3457, 3457K, 3457NA, 3457NAK, 3757A, 3757AK, 3757ALL, 4057, 4057LL, 4057K, 4114, 4114LL, 4114K, 4157, 4157LL, 4157K, 4157NA, 4157NAK, 5702A, 5702AK, 5702AK, 3157-SCK, 3157-SRCK, 3157-SACK, etc. Dimension (inches): 0.71 in diameter, 2.50 in length.It requires 50W 6ohm load resistor & the led switchback only works greatly based on the original bulb has dual function: front turn signal & parking/ DRL on the same bulb.