H2 brake light problem
 

I'm having a problem with the left brake light on my H2. It lights up as a running light when the headlights are on but the brake light dosen't work and it dosen't signal left. I changed the bulb and ruled that out as the problem. I couldn't find the fuse for it under the hood. I'm assuming it's a bad connection or wiring issue. Any input would be greatly apprecitated.