For internal installation within headlight. When turnsignals are not in use the strips function as intense white daytime running lights. As soon as turnsignal is activated the daytime running lights turn off and the signaler on the corresponding side only sequences. A functional and unique addon that increases other driver's awareness of you while adding some serious style points to your favorite ride. Watch Video at youtu.be/3x5PvwF6KW8 Kit Includes:2 LED Strips2 Brain Units (Black Box)1 Year WarrantyRetail Package Features:Syncs With Factory TurnsignalsLED Strips Are FlexibleLED Chain Is Stretchable From 50cm up to 69cmBrain Unit Ties In With Factory Signals Without ModificationRear of Each LED Pod Has a Flexible Metal Clip For Securing To Any SurfaceDRLs are said to improve safety because they increase the visibility of the car to other traffic, especially on shadowy, tree-lined roads and at dawn or dusk. Daytime running lights are already compulsory in countries such as Sweden, and the maker claims they increase safety as other drivers are more likely to see you. DRLs have been mandatory in Scandinavia since 1977 and will be compulsory in Europe from 2011.