ITEM NAME:2X Auto Vehicle H1 H3 Headlight Anti Flicker Adapter Resistor Canceller Decoder Description: High quality and long service life. Easy plug and play, no modification needed. Solve error message on dash board and headlight flickering issue. Work with all aftermarket LED kits: H1, H3. 2 pieces error canceler decoder kit for LED headlight, fog light. Specification: Type: electronic Size: approx.30x3x3cm Voltage: 9V-16V Package Includes: 2 Pieces Error Canceler Decoder Kit Note: It will not work on Switchback LED bulbs! Please check the model before ordering. If there any question, please.2 pieces error canceler decoder kit for LED headlight, fog light. 2 Pieces Error Canceler Decoder Kit. Easy plug and play, no modification needed. High quality and long service life.