I had my left brake light go out recently. No big deal, I went to the store and got some new ones, put them in, both worked fine. I did replace both lights, I always do that when one goes out.

Well, backing into my garage tonight, I noticed a problem. The right light is always on like the brakes are on, but the left light works like it should, tail light until the brakes are pressed, then it gets bright.

So what is the problem here? It is really annoying, does anyone know how to fix it? I'll check it out more, any help is appreciated.