BMW Ambient Lighting Upgrade ONE PIECE PER DOOR BMW F36 Interior Door Ambient Lighting Upgrade (4 Total). Fits BMW F36 4 series gran coupe with ambient lighting package already present. This kit upgrades your existing lighting to give you the new 5 series look in your 4 series gran coupe, creating a line effect on your door cards as shown in the pics. It makes the existing soft light in your door really pop! How it works: LED lights are directional so without these covers the light only shines in a downward direction as a soft illumination towards the door handle. What these plastic strips do is deflect the light passing through the material causing the light to concentrate internally in the layers of plastic, illuminating the strips to form a brighter sharp line that enhances the look of your vehicle. Does not include lights, this is for cars that already have the optional BMW lighting package. You will know if you have the necessary lighting package if you have a row of soft light in your doors. This product is only meant to amplify existing lighting. This kit is custom made to fit BMW F36. Kit contains 4 pieces total consisting of 1 piece per door. 2 Long = Front 2 Short = Rear Precision shaped, just press fit in by hand, no tools required! Easily removable, does not alter stock lighting or doors in any way! Any questions please don't hesitate to ask. Video link for installation available upon request. PLEASE NOTE: The basic shipping offered is First Class Mail. USPS deliveries for this service sometimes take up to 2 weeks, despite's estimate of 4 ? 5 business days. If this is unacceptable to you, then please upgrade the shipping class to Priority Mail or Priority Express during checkout. Otherwise, please allow 2 weeks from purchase before contacting us even if there are no apparent tracking updates.