I think the sedan might have differently labelled switches to the coupes...
Here's the 2000GT-R, which has L and W switches, plus the leftmost one is a blank....and is it my imagination, or does the sedan only have one column stalk, not two?
And you can see in this 2000GT, that the leftmost one is F.
So all the advice being provided by coupe owners may be of little relevance here
But maybe the Sedan has F (Foglight), L (headlights) and W (which, unlike the coupe, is a 4 position switch of slow, slower, off and squirter)
No Kev, you are eating a duck fetus.