For the blue light function: 1. Connect with the puddle light power. after the car is unlocked or locked, then dynamic blue light will be on for 5-15 seconds. 2. Connect with the side mirror flip power. after the car is unlocked, then dynamic blue light will be on for 5-15 seconds. 3. Open the door panel to connect with the positive to get power. after the car is unlocked or locked or the turn signal lamp is turned off, then dynamic blue light will be on for 5-15 seconds. Anyway, you can just use tape to and let it be or cut the wires off , use the yellow turn signal only. With E8 Sign. Matte semi-smoke glass. Plug and play installation. Easy to install, directly connected to the plug. No coding required. Dynamic turn signal,scroll smoothly. Fitting position: outside exterior mirror. LED technology,more . Long lifespan, more Safety, waterproof. There are three connection methods to achieve the dynamic blue effect, and different methods have different effects: Connect the positive pole of the puddle light power supply. after the car is unlocked or locked, then dynamic blue light will be on for 3-10 seconds. Connect the positive pole of the rearview mirror flip power supply. after the car is unlocked, then dynamic blue light will be on for 3-10 seconds. Open the door panel to connect wsitive power wire. after the car is unlocked or locked or the turn signal lamp is turned off, then dynamic blue light will be on for 3-10 seconds. Anyway, you can just use tape to and let it be or cut the wires off , use the yellow turn signal only. Compatible with: Fit for 4 / LR4 2014-2016 facelift model Fit for L462 2017-2018 Fit for Sport L494 2014-2018 Fit for Evoque 2012 2013 prefacelift modelFit for IV L405 2013-2018 Lens : matte semi-smoke Colour: Black Material: Plastic + LED Package Contents: 1 Pair * Car Rearview Mirror Turn Signal Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.