Yudely 2 Pcs Warning Cancelling Load Resistors Error Free Plug and Play Computer Warning Cancell Anti Flicker Load Resistor Set Led Resistors for Automobile (H4/9003/HB2) Only for Yudely LED bulbs flashing/flickering and cancels canbus error warnings after installing LED light bulb. For low voltage vehicles - Cancels headlight flickering. It's very easy to install, no modification is needed. High temperature waterproof nylon material, copper wire, durable. Package content : 2x load resistors.