I had a period fog light in a draw in the garage which i have had for years so not having much on at the time decided i would fit it. There are plenty of blanked off holes in the dash for switches and warning lights so i utilised a couple of them. Bought a switch off eBay of the correct year found a label to put on it and after a few hours wiring on a sunny afternoon had it all fitted (with appropriate fuse).
Probably never use it – but i enjoyed fitting it.