ITEM NAME:2x H8/H9/H11 LED Headlight Decoder Anti Flicker Resistor Canbus Error Cancell Gw.2x canbus adapters. One pair (2 pieces) of error canceler decoder kit for LED headlight, fog light. LED Headlight Features Easy plug and play, no modification needed. Usage: Headlight, fog light. If you've installed LED lighting kit in your car but are getting a flickering or strobe effect and error or warning codes, then these code canceling capacitors are your solution.