600% Brighter than Halogen: AUXITO 1157 switchback LED bulb is built with newest high brightness LED chips, generating 4000lm super bright output per pair, which can help others notice your vehicle faster and clearer even in the bad weather. | Canbus Error Free Design: These 1157 switchback led turn singal lights adopt newest built-in intelligent IC driver and high wattage make the LED 1157 amber/white bulb compatible with more vehicles. Work well with 98% vehicles’ systems, no radio interference, just plug and play. Few special vehicles may meet unusual canbus or installation issues, such as no white/amber light, not turn on, or switchback doesn't work, etc, load resistors may be required to solve the issue, you can contact us through Amazon Buyer Message to get help and solutions | 50,000 Hours Lifespan: Whole aviation aluminum body and 12,000RPM turbo cool fan that diverts heat away from the light's critical components, our 1157 led switchback turn signal light bulbs offer 50000hr lifetime, reducing the need for frequent replacements. | No Hassle Service: Due to the complexity of automotive systems, very few vehicles may run into compatibility issues after installation. If you meet any trouble during the installation process, you can reach us for help. | Dual Functions: These switchback turn signal lights fit size: 1157 BAY15D 1016 1034 1157 1157A 2057 2057A 2357 2357A 2357NA 2397 3496 7528 p21/5w, and the amber light work for turn signal lights and white light for parking lights/daytime running lights.