The 2018-2021 Ford Mustang Dynamic ColorSHIFT Halo Kit with DRL Upgrade from ORACLE Lighting packs a ton of innovative features. These RGB headlights for 2018-2021 Mustangs have unique options such as Sequential FLOW Turn Signals, white DRL mode, and smartphone control all in one package!Dynamic ColorSHIFT features individually addressable LEDs which pack a ton of unique features. The Dynamic features allow the user to run multiple moving color patterns through the LEDs, creating a vivid eye-catching lighting effect. The color-changing motion flow effects are conveniently controlled through a free smartphone app, and the system features over 200 pre-programmed moving patterns as well as static color control and color wheel.The integrated controller features both DRL and turn indicator inputs. The switchback LED indicator features our exclusive Dynamic FLOW turn signal effect. The white DRL trigger automatically switches the LEDs to pure white when you start the vehicle (connect DRL trigger to ignition switched source). Professional installation recommended with our premium silicone sealant. White and amber are considered on-road legal colors. Other colors not intended for on-road use; please verify your state and local driving laws.