GTR Lighting 31mm CANBUS Festoon LED Bulbs: Perfect for interior dome lights, license plate lights, and anywhere on your vehicle.These LED bulbs will replace any 31 - 33mm Festoon dome light bulbs. These LED bulbs will replace DE3175, DE3022, 3175, 3022. CANBUS Compatible: These bulbs have a built-in CANBUS integration circuit to work with any vehicle. If your car uses a CAN-BUS monitoring and control system for your original festoon bulbs, these will be a plug and play replacement install.