It basically does what it sounds like – it’s an extra brake light, mounted right in the middle of the rear window, usually. It illuminates whenever you press the brake pedal, adding to the two lights already built into the tail lights. Some of these newer ones are LED, which makes them brighter and faster to respond – quicker reaction time for drivers behind you. Think of it as a redundancy thing, and a visibility booster. Originally, cars only had the two brake lights. As cars got wider and designs changed, that center light was added to give drivers behind you a much clearer, bigger target to see when you’re slowing down. It helps them judge your distance and speed more accurately, especially in busy traffic or bad weather. It helps make your stopping intention way more obvious. Honestly, it's a safety item. You’ll notice if it goes out pretty quickly because it’s right in your field of vision when you look at your rear window. A burned – out third brake light significantly reduces how visible your brake application is to other drivers. That extra light acts like a shield, helping prevent rear – end collisions. It's often something inspectors will flag during a vehicle safety check, too. You can find replacements pretty easily. We’ve got a good selection at Fixparts Online, and they aren't too difficult to install yourself if you’re handy, or any local shop can swap it out for you in no time. Worry-free performance: Third Brake Light (MPN 63258368764) is covered for 12 months!

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