Unlike most turn signals flashing amber-white-amber-white on the market, the Auxbeam 3157 turn signals flash amber-off-amber-off, making it easier to see from a distance. The built-in 2023 stable current IC driver avoids digital or VHF radio signal interference. With built-in 2023 CANBUS system, these 3157 dual color bulbs can directly alleviate decoding problems without trouble to prepare external resistors. Auxbeam offers 1-year warranty. Note: NOT fit TOYOTA TUNDRA 2014-2021 and TOYOTA TACOMA 2016-2020 Light Color: Cool white for parking lights or daytime running lights (DRL); Amber yellow for turn signal lights. Faster on/off response and vibration resistant. Auxbeam B21 Series 3157 LED Bulbs Amber Yellow Built Uzbekistan Instant-on response without warm-up time. More noticable when turning, guard your driving safety. DUAL COLOR FUNCTION: This 3157 switchback led bulb with resistor lights up cool white for parking lights or daytime running lights (DRL) but amber yellow for turn signal lights Built-in stable current IC driver for better fitment and longer lifespan More noticable when turning, guard your driving safety. The 2023 latest cooling system - 12,000RPM silent fan + Copper cooling ring + 16Pcs heat sinks + 6063 aviation aluminum lamp body directly doubles heat dissipation, ensuring longer lifespan up to 60,000 hours. Auxbeam B21 Series 3157 Switchback LED Bulbs Built in Resistor CANBUS Error Free Anti Hyper Flash T25 3057 3457 4157 Bulbs White and Amber 600% Super Bright Turn Signal Light DRL Parking Light - Tamaño 3157 | Guatemala International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.