You need an LED decoder to solve any faults or alarms after modifying your LED floodlights! Because a small number of control circuits of the car headlight areControlled by the on-board computer, and the working principle and working current of LED headlights areDifferent from halogen lamps, the Travel computer cannot detect the feedback signal of the LED headlights, resulting in the dashboard display. The phenomenon of fault light, so thatInstall the LED decoder. If your car is upgraded with LED headlights, you need an LED decoder to solve the following problems:Dashboard headlightFault light is onInstrument panel highBeam indicator is not onTurn on the LED engine headlights to flickerTo eliminate interference and prevent bulbs from flickerTurn on the LED headlights andTurn off the engineEliminate interference inModified led headlights on the travel computer(Eliminate system failures)Upgraded metal housing powerful a decoder thatEliminates 98% of error codesOn the car dashboards. Brakes error messagesWarning errors caused by the on-board computer "out lamp" or "lamp malfunction". Pre-wired for direct plug and play, bypassing wiring such as conventional load resistors. Used with most aftermarket LED headlight kits, this decoder can solve 95% of car headlight problems. Note: Even if this decoder is the size according to your vehicle, we cannot guarantee that it will solve all problems because car systems are different. Model:H1, H3, H4, H7, H8, H9, H11, H10, HB3 9005, HB4 9006Customization voltage:Universal 9V-36VMoc light source:3(W)Current:2 lit. A)Applicable Models:Universal Material:Plastic Protection Class:AAAACome Type:Plug and playLuminous Flux:100%Package Included:LED Decoder*2Warm Advice:Dear buyers, due to the lighting effect, monitor brightness, manual measurement, etc., there may be slight differences in color and size between the picture and the actual item. Sincerely, I hope you can understand this! Thank you!