Latest TCS version 3-color 9006 HB4 LED switchback fog lights bulbs, 6000K white, 3200K yellow and 8000K blue. Plug and play, easy installation for most vehicles (for European vehicles like BMW, Audi, Mercedes-Benz, etc, extra resistors maybe required to avoid the error code or flickering); and easy switch color by just power on and off the fog light switch.
This type 9006 HB4 LED switchback bulbs are used to upgrade OEM dim halogen or damaged fog lights, DRL(daytime running lights) bulbs for better vision, luxury and safer driving.