Hi EagleBill, on the 116s, the flasher unit is located below the instrument panel, but it is normally accessed by removing the covered knee pad and the large black plastic heating/cooling distribution panel behind the knee pad. It is normally located by four self tapping screws.
I would imagine that you would have the the very exact same situation with your car, but access is probably even a little more difficult as the 107 is a smaller car physically. In order to actually get to the unit itself, you will probably have to lay on your back, face close to the brake pedal and legs up in the air gripping onto the back cushion of the front seat. One of the jobs not quite so nice. The flasher unit itself is black, of rectangular shape and has a three pin connection (should have) that fits into another larger connector. Sorry no pics., and if others have more details to add, I am sure they will. Regards Styria