1.Please check whether your car needs a CANbus adapter before buying:
Remove the bulb and turn on the bulb switch. If an error code appears, it means that the car has CANbus.
Our bulbs are suitable for most cars. but European/German cars (some Volkswagen, Mercedes-Benz, BMW, Audi, Kia, Opel, Renault, Hit, Logo, Skoda, Jeep, Dodge, Chrysler, Volvo, Fiat, Ford，Seat or some European vehicles)and the latest vehicles equipped with the CAN-BUS system may require load resistors to bypass the error code/hyper flash/not working problems during installation of the headlights,fog lights,DRL,turn signal lights and brake lights, etc.
（Please be clear that LED bulbs with canbus are suitable for more cars than LED bulbs without canbus! But not suitable for all cars with canbus!）
2.With DC 12v power supply, it can be judged whether the bulb itself is working.
3.Please confirm your socket before making an order. Thank you.
