The car is my 81 MB 240D. Hasn't been driven all winter, but battery has been kept charging on a float charger. Started up and ran perfectly, AC (R-12 system) kicked right in, all good. Then I put on my turn signal. Fast flashing, though it was maybe a bad connection from sitting... found other side did the same thing. Then I try the hazards - that is fast flashing too. Pull into the garage and try the hazards again, and find that all four bulbs are lighting just fine! Just flashing fast, like it does when one bulb is out. This system is very simple - the hazard flasher button has a relay built into it. So when the control stalk is used, it controls that, and of course when the button is depressed, it automatically overrides all four and flashes them. It is a 1970s system at best, and in later cars they segregated the relay form the button. Mine is old tech. The alternator was putting out 14v, all seemed ok. So, anyone familiar enough with these relay flasher systems to help me understand just where to start? Ive checked both taillight turn bulbs, and they both look good, clean and work. Front ones weren't removed and reseated, but they both illuminate. Any recommendations on how to break up the system and start to troubleshoot? Thanks!