Hello and welcome to Just answer.com, Super mechanic here. About your vehicle.
Let me see if I can help with this.
Do you have a way to check for power? A volt meter or a 12v test light?
Okay. The first thing to do is to see if there is power at the stop light fuse. The reason I say that is because there are some fuse links, (at the starter) that power the headlights and stop along with the hazzard fuse. The signal lights are on a different fuse link.
Normally you can tell when one is bad...it will feel like a rubber band when you pull it. Sometimes you will even see where it is burnt.