Hey guys, I've had a little search but mine seems to be doing the opposite. My right tail light doesn't work but when i press the brake it works. I thought it may be because of a dual filment bulb (which may be true until i get another globe tomorrow) but sometimes when it's not working i can hit the tailight and the bulb works.. Could that be more of a wiring thing or still the globe? Cheers.
The globe is loose in its socket or there is corrosion present. Pull the light assembly out, remove the globe and check to see that it is clean on the metal section without corrosion. Check inside the socket for the same thing. Replace the globe and have someone operate the brake pedal, while you wiggle the globe. If it works intermittently, the spring contact at the bottom of the socket needs to be pulled up slightly to increase tension and provide a better connection.
I took it apart quickly and wiggled the wires around. I'll go further when i get my new bulb. Cheers.