My driver side brake light is always on. This is only when I turn on the lights at night also. The other brake light and the third eye still come on when I depress the brake pedal but they do not stay on like the driver side. I have checked the fuses, replaced the brake light housing for the driver side, and I have replaced the bulb. Nothing has worked. What could it be? If it is a short, how do I find out and how do I fix it? I could use some help because I suck at solving out electrical problems.