Blueblood - sorry for my poor description, I forgot about the buttons on the end of the wiper stalk, which could more accurately be described as "rocker buttons".
What I was trying to refer to was the four position switch you mention. I thought that for:
Cars without auto wipers - this controls the intermittent delay (essentially just a timer control)
Cars with auto wipers - this controls the sensitivity of the auto wiper function.
The reason I say this is because on a sunny day, with the auto wipers on they don't move at all - which leads me to believe cars with auto wipers don't have an intermittent timer state, just:
-Auto wiper (with variable sensitivity through the aforementioned switch)
However I've only had my car three weeks so I'm happy to stand corrected!
Last edited by LukeyC; 21-08-14 at 13:21.