Which tab is for flashing headlights?

[simonmarsh]

Hello- I recently replaced the ignition switch on my 1980 model which resolved the random cutting out issue but when I removed the ring that houses the stalks for the wipers and indicators etc a single copper spade/ tab fell out of the plastic housing. The only thing that doesn’t seem to work now is the headlight flasher - I can’t switch to permanent high beam but nothing happens when I try to flash the headlights. I can’t for the life of me work out where this tab fell out from- does anyone know please? Many thanks