Tail light inoperative, brake light works

[02gz250black]

:??: So this is my situation:

Brake light works when brake is pressed/squeezed. Tail light does not function. Also, rear turn signals do not illuminate as running lights, like the fronts do.

Fuse is good. Have replaced brake light bulb and tail light works for a short period of time, but quits. Have noticed that the last time the tail light quit working was after I went over a pretty rough bump.

Any ideas guys? Riding season is finally starting back up here in Alaska and I don't want to be sitting on the sidelines.

Brian