Over the weekend I noticed my left front turn signal did not work.(72 911E) At that time the left front parking light was working. I took the lense off thinking the light was burned out. Replaced with new (twice) with no joy. Checked fuses, all good. Bulb was a bit loose so I thought, what the hell, pry the contacts in the socket up a bit. Forgot to turn off ignition, small sparks now no left front parking light either! The strange thing is the left rear turn/parking lights still work and I believe they run off the same fuse. Wiring all appears to be good. Sure seems like a fuse problem, but replacing the fuse has done no good at all. Any ideas?