Recently I found out that my 3rd brake light doesn't work; I changed the bulb but still doesn't work. Anyone ever had this problem?
 
Do your other brake lights work?  If so, then there's gotta be a wiring issue somewhere.  If not, then it could potentially be a switch issue or something.
 
 
yeah the others work; where are the switches located and how do I check if they work? Any tips would help.