I have a Level as well, and although I do not know the answer to your question, I would guess that the fuse or fuses are located at the base of the battery bay in the down tube, possibly beneath the controller.  That's where I would start looking.  It would only make sense to have any fuses located near the battery in order to avoid unnecessary wire damage in the event of a short circuit.
I am also wondering why it is that you think you have a fuse problem.  What type of error are you seeing?