turn signal flasher 240D

Well, if your MBZ is a '76 then it's below the dashboard on the left hand side in front of the hood release. It's mounted on the same bracket as the pedal that sets the emergency brake (I had to tie mine to the bracket because it kept popping out of the socket after the emergency brake pedal was released enough times - maybe that's your problem too).

There's a cardboard covering underneath the dashboard that you have to remove first but that's simple enough to do.

ron