White 39mm 2-SMD 2835 LED AC 12V Festoon Dome Light LED Bulbs - Package of 1 PCS Feature: 1.Long-lasting LED chipsets with C5W Contact Base; 2.Easy installation, no any modification need; 3.Canbus for most cars except some Germany cars such as BMW,Audi,Benz,Golf and Volvo; 4.Warranty for 12 months, replace new one at free after confirmation of our product photos from customer. Please check your car need canbus or not before purchase: First remove bulb and switch on your car, if error code come to your car display, it shows that your car need any led bulb with canbus function, some Germany cars such as BMW, Mersedes Benz or Audi, Volkswagen may need to connect extra canbus decoder(or extra resistor) Please check voltage before purchase: Usually truck require voltage more than 28V,so which cant use 12V or 12V/24V bulb, so you should chose 10V-32V bulb Our P13.5S and BA9S/BAY9S/BAX11S bulbs all are+ at the bottom and -at the side, so please notice before purchase because some cars require- at the bottom of bulb Energy-saving: LED bulbs is different from Halogen or HID bulbs, the power in our listing is theory power while the actual power is so small