Hi Bernie
Thanks for your advice. However, I have since acquired a Durite 3-way illuminated switch which, although the lever is green and the hole required in the dashboard needs to be a few millimetres larger diameter, will look very similar to the original. I also had to replace the 12v ‘grain of wheat’ bulb with a 6v one. With this and the electronic flasher unit with audible clicking sound from Classic Car LEDs I can dispense with the Scintex unit altogether and the replacement LED ‘bulbs’ in my indicators will work correctly.
Peter