What is Fiber Optic?
Some BMW and Mercedes-Benz models are equipped with fiber optic amplifiers through which voice, data, protocols, etc. are transmitted.If your car has optic fiber(Ignore if no optic fiber), need to relocate it to android harness, or else the problems maybe: No sound, No signal, etc
BMW's fiber optics are usually green, while Mercedes' fiber optics are usually orange.
How to relocate Fiber Optic to Android harness