SiriusLED Super Bright White and Amber Switchback 3030 Chipset SMD LED Bulbs with Projector for Car Turn Signal Lights DRL 7440 7441 7443 7444 992 A pair of bright 3030 chipset LED bulbs with duel-color functionality used to upgrade your parking lights, day time running lights and turn signals. 3 size you can select:3157, 1157, 7443 (please double check that you are ordering the correct set for your need) Ample amount of light output contributed by the total of 16 individual 3030 LED chips and projection technology. Built with an aluminum chip base and housing makes for better heat distribution for a longer lasting life span. Switchback technology allows for color to change from white to amber while turn-signals are in use and switch back to white after. no hassle plug-and-play installation. Load resistor or flash relay might be needed to prevent the hyper flash or the bulb does not blink