Autolizer 3157 Switchback 22-SMD White/Amber Dual Color 3155 3457 4157 LED Bulbs For Turn Signal Lights with 50W 6OHM Load Resistor (Pair of 2) 22-pieces high power 5730-chipsets & 50W 60HM LED Load Error Free Resistor. Dual color, unlike the traditional dim Amber color, our high powered Amber chips emit very bright golden light. Gold/White 3157 switchback used as Front Turn Signal Light / Parking/DRL lights. Xenon white light up for parking lights or daytime running lights. Gold/Yellow light up for turn signal lights.The turn signal lights flashes in "Yellow-off-Yellow-off" mode, which makes it easier to see. Standard 3157, NOT CK | Cross Reference: 3157A 3057 3155 3157NA 3357 3457 3457A 4157 double-filament bulbs for front turn signal lights For some high powered cars like Dodge, Ford, BMW etc, you might need to add 50W 6-Ohm load resistors or flasher relay to prevent the LED bulbs from hyper flashing, error codes, or other lightning disorders. Work for dual-function lights that have both the parking/DRL light and turn signal function in one bulb. Our bulbs come with Standard Base, NOT CK Type.