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Enhance the look of your Audi with the CAP Carbon Fiber Diffuser. Made with high quality carbon fiber, this diffuser will enhance the sporty look of your Audi will still remaining elegant. Comes with function LED brake light in the middle.
2020 - 2022 Audi S4
Brake Light Wiring:
Red is the live wire.
Black is the ground wire.
Yellow is the brake light wire.
Professional install recommended. Removal of bumper may be required to get best fitment.