Auxbeam 2023 B21 Series 7440 LED Bulbs Amber Yellow Built in Resistor CANBUS Error Free Anti Hyper Flash 7440A 7440NA 7440AL 7440LL 7441 992 W21W WY21W Blinker Bulb 600% Super Bright Turn Signal Light - B21-7440-A

• CANBUS ERROR FREE: Super compatible for 99% Vehicles. No hyper flash, no errors, no warning. With built-in 2023 CANBUS system, these 7440 amber bulbs can directly alleviate decoding problems without trouble to prepare external resistors. Note: Auxbeam offers 1-year warranty. For some super few sensitive models like Jeep, Chrysler, Chevrolet, GMC, Dodge, RAM and Volkswagen, extra resistors may be needed or message us to get. 600% EXTREMELY BRIGHT: Sequencing 36PCs Upgraded high brightness 3030 SMD chips precisely around each 7440 led bulb, 28W per bulb, High Power and 600% brighter, providing 3500K Amber Yellow light for turn signals. Stronger light penetration output for 40% more visibility than ordinary leds. Instant-on response without warm-up time, 360° illumination without dark spot, brighter and safer when turning. TURN SIGNAL ONLY, NO DUAL FUNCTION: This 7440 amber led bulb with resistor supports only turn signal light. When used as turn signal bulbs, the 7440 led bulb with built in resistor flash "amber-off-amber-off", making it easier to see from a distance. Note: Please do not use if your original bulb has two modes or switchback: turn signal + daytime running light or other combination. 4-LAYER COOLING SYSTEM: IP68 waterproof and dustproof. The built-in 2023 stable current IC driver avoids digital or VHF radio signal interference. 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. 360°FULL CLEAR BEAM: Each 7440 led bulb provides 360° full illumination without dark spot or shadow. Compatible for both US standard sockets and CK sockets. Fit socket 7440, 7440A, 7440NA, 7440AL, 7440LL, 7441, 992, W21W, WY21W, etc. No polarity, no drilling, no wiring, no damage, just Plug and Play. If any questions or flashing issues, please message us for free solutions.