2 PCS H4 Car Auto LED Headlight Canbus Warning Error-free Decoder Adapter for DC 9-16V/20W-40W

AttentionApplicable to Most Auto Car Vehicle Automobile but it is not fit for Audi BMW Mercedes Porsche Volkswagen or domestic vehicles. Compatible for 95% of vehicle with CANBUS System for fog lights or turn signal lights and ensure the LED bulbs light up full power without malfunction issue nor flickering issueSolving Problems1. The indicator of the instrument panel lights when the headlight is used as Fault Light. 2. The indicator of the instrument panel doesn't light when the headlight is used as High Beam. 3. The LED head lights flash when starting the engine. 4. The engine stops working when turning on the LED head lights.Error warning1. LED head lights don't light. 2. LED head lights keep flashing after installation. 3. One of the LED head lights but the other one doesn't light. 4. LED head lights automatically turn off after lighting up for few minutes.