One day I decided to investigate why my horns worn’t working and found out that the same fuse feeding power to the honker was also sending juice to the stoppers. Which at first made think, “so that’s why everyone was honking at me” but became what I like to think of as very Japanese ways of building things. As an American I expect twice as much weight in wiring with double redundancy for the sake of security, but Japan knows that not everyone is a giraffe and one way to check whether the brake lights are working or not is to simply honk the horn.
It’s like the time I lost the alternator belt and I found out the battery light is actually a charging indicator. That way you would know that the alternator isn’t charging, and if the pulley’s not spinning the water pump might not be either. Instead of wondering when I installed an electric water pump. But that’s a different story involving an AMG GT.
It is a 15 Amp fuse marked STOP, and its located under your clutch foot.