ITEM NAME:2Pcs Warning Error Decoder Canceller Capacitor ANTI-FLICKER For Xenon HID L C2K4 2Pcs Warning Error Decoder Canceller Capacitor ANTI-FLICKER For Xenon HID L C2K4 If you've installed HID 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. Work with all aftermarket HID xenon kits: H1, H3, H4, H7, H8, H9, H10, H11, H13, 9004, 9005, 9006, 9007, 880, 881, 889 Solve the error message on the dash board Eliminate HID headlight flickering Solve the computer error warning encountered during the installation of the HID kits Work for all car with computer controlled headlights, such as Benz, BMW, Audi, etc. Plug and play Very easy to install; no modification is needed Volts In: 9 to 16V Package Includes:2 x Warning cancellerseel Note:Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.