Feature:1. Taillight turn signal module, specially fit for 4 Series F32/F33/F36 20132019, for F82/F83 M4 2013-2018.2. The dynamic turn signal wiring harness will bring a distinctive and unique appearance to the operation.3. 10 adjustable delay levels from 09, "0" for no delay, increasing by 1 level in turn means the delay is superimposed by 10ms.4. The module slightly delays the control of the external steering signal to get special effect.5. Just plug and play, no need coding to create the desired affect, easy to install.Specification:Item Type: Dynamic Turn Signal Blinker ModuleMaterial: PBT+FEPType: 5-PinQuantity: Pair(Left+Right)Installation: Plug and playFitment:Fit for 4 Series F32/F33/F36 2013-2019Fit for F82/F83 M4 2013-2018(Only for Taillight With Following OE Number:63219491575 / 63219491576 63217426057 / 6321742605863218496523 / 63218496524).Package List:1 x Pair of Dynamic Turn Signal Module(Left+Right)1 x ManualNote:Professional Installation is Highly Recommended!!!Please confirm whether the OE number of your original taillight is within the compatibility.