These LED bulbs are not canbus ready, It may cause error on dashboard or result in these car exterior LED light bulbs turning on and off intermittently if they are installed in vehicles that carry with Canbus system<br> DRL mode may not function in applications if the beam is used for DRL by reducing voltage<br>CSP LED chips<br>10000 lumen a pair<br>5000 lumen per bulb<br>Adjustable and removable aluminum adapter<br>Direct replacement of halogen lamps<br>0 second no delay fast bright<br>Up to 30000 hours life<br> Package contents<br> A pair h11 LED bulb<br> An instruction book