Daytime Running Lights For BMW X3 X4 F25 2014-2017 LED European Angel Eye White Light Car DRL CHIP Ballast Luminous Tube Module Product Name: Auto Headlight Ballast Chip + DRL Product purchase instructions: There are three options for the purchase category-left headlight/right headlight/1 pair of headlights/. (Left and right to distinguish: sit in the cab / left hand - left side, right hand - right side) Condition: New Luminescence color: Chip - white light Purpose: Replace together. Perfectly solve the problem of yellowing of car lights. Applicable models:For BMW X3 X4 F25 2014-2017 LED European version headlights Note: The yellowing of car lights is mainly caused by the DRL and chips burning for a long time. The probability of DRL damage is 80%. The chance of chip damage is 20%, and the yellowing is not serious, and you can buy accessories separately. Severe yellowing. Please replace one set (DRL+CHIP).This is the best solution to solve the problem. Note: Changing one side separately will cause color aberration. Also white. There will be strong and weak. Friends who care about poor color. Please replace one pair of our products at a time. Chip - Replacement Method: 1: Pry open the original chip with a screwdriver (chips with fixing screws need to be opened in advance) 2: After turning on the original chip. There are traces of thermally conductive silicone on the top of the chip. According to the original traces on the back of our products, the imported silicone is evenly coated (the LED lamp beads must be coated with thermally conductive silicone underneath) 3. Stuck in the original position. Press down to flatten it. Wait for binding. Normal installation and use. No programming required. NOTE: This product must be installed using thermally conductive silicone. This is the only way to ensure the longevity of the product. Example of headlight photo: