The canbus decoder is easy to install, plug and play, and no wiring or modification is required.The canbus decoder can solve the following problems: dashboard headlights and high beam failure information, LED headlights over flashing or flashing, the engine stops working when the LED headlights are turned on, and the LED headlights stop working when the engine is ignited, and the headlights turns off automatically after a few minutes of lighting.Made of plastic and electronic component material, it is durable and safe to use.The length of the product is 30.36cm.It is suitable for H4 LED headlight of car, truck, vehicle, SUV, van and so on.Item Name: Headlight DecoderMaterial: Plastic,Electronic ComponentColour: BlackCanbus Coordination: H4Features: Plug Play, Easy to Install, Heat-resistantSize Details: Length: 30.36cm/11.95" (Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Feature:1. The use of load resistance capacitor anti-flash error killer solves the problem of error code or fast flashing caused by low current consumption when LED bulbs are upgraded to halogen bulbs2. It will solve the problem of warning error codes, super flashing, and prevent most vehicles with error messages and CAN bus errors, including: for Dodge, etc.Tips:1. Please check the type and size of the LED lamp base of your vehicle to confirm whether the item is suitable.2. As a safety precaution, make sure that the vehicle has time to cool down properly before starting the installation process.3. Make sure to turn off the ignition switch and remove the key.4. Fully check the connection of contact points, ports and wires, because wrong connections may cause lighting problems.5. If the CAN bus wiring system shows signs of problem warning errors on the dashboard: bulb failure, flashing, the customer may need a warning/error cancellation load resistor/decoder to bypass the error message.6. These models may cause error problems, such as some European cars.7. By the way, the error decoder cannot solve the error warning problem .Package Includes:1 x Headlight Decoder Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.