SOCAL-LED LIGHTING H4 9003 LED Decoder Upgraded Strong Canbus Error Code Warning Canceller Anti Flicker Relay Adapter, Pack of 2

Why need LED Decoder? When a LED kit is installed in newer car models or cars with a computer controlled unit CAN BUS, often there is a error code showing on the dash board or the HID lights keep flickering and would not stay on. This is due to the fact that the LED kit is triggering a bulb out warning signal in your car's computer control unit. Where our LED Headlight Bulbs Stand Out: Upgraded version metal housing strong LED Canbus Decoder with latest decoding technology, it is designed to balances out the current draw of the LED kit and would offset the warning signals on the dash board. It will also eliminate headlight flickering that is caused by the Vehicle's computer not recognizing the low wattage LED bulb. True Plug-N-Play: Easy to install, ture Plug-n-Play AMP connectors. Fitment: 1) Please double check the size of the bulb with your car before purchase. The amazon bulb fitment guide will tell you if these fit your vehicle However! It will not tell you if its for fog, low beam or high beam. 2) Please check your car Owner's Manual. 3) We Suggest you to search automotive lamp replacement guide online to ensure you purchase the right size bulb.