I have a brake light out. It's on the right side rear. All the bulbs in the light unit are functunal, i've replaced all four of them. When the headlights are on, some of the bulbs are on, and when the brake is pressed, a bulb goes out that is lit on the left side. I know the bulbs aren't gone because they work when the brakes are off but the lights are on. I checked the fuses and there's only one fuse for the whole brake light system, which is in good shape. My question is, is this a wiring issue? Has anyone had this problem. My friend has a similar problem on a Camry.