My driver's side brake light is doing some funny stuff. I was told it was out so I changed the bulb. Simple, right? Wrong. Now it blinks (as it should) when the key FOB is used to lock/unlock the doors. However, it will not illuminate when the brake pedal is depressed. The passenger side...

So brake lights work when the lights are switched to on. But if lights are not on, no brake light on drivers side. Fuse or switch problem?