[Southside12345]

I have a 2000 Expo, that since I bought it used, has been great, but for the lights, from turning signals to brake lights, they are all now done, the headlights and fog lights are fine, so are the interior lights.. Just the Signal and Brake.. Any ideas, and yes, I have changed the front one's and NOTHING... I am about to go to any mechanic, but I want to at least have an idea of what going, on or maybe if I can fix it myself.. ANY HELP WILL BE GREATLY APPRECIATED...