I have a 73 Bavaria. My left and right turn signal recently stopped working. The hazard flashers still work. I checked the fuses but they don't seemed burned out (I have yet to replace them). What are the chances both fuses would burn out simultaneously? Could it possibly be a problem in the steering column or something else I'm overlooking? Also would the ceramic fuses used be easy to locate? I am a newbie so thanks for you patience and help!