I am having problem with my left tail light. It sometimes goes out and only workes when I apply the brakes. About a week ago I put a new bulb (not sure what kind) in to replace it and it started working. Yesterday I noticed it was doing the same thing again, but I came on after a while of riding. Is there a certain kind of bulb I need for this? Should I get it from my dealer and let them tackle it? Anyone ever heard of this problem? Thanks 