My Canadian switch (PN. 61311386631) works as follows:
Off Position (all the way in) - parking/dash lights lights on, low beams on, high beams and fog lights do not work.
Position I (one click out) - parking/dash lights only, no low beam or fog light function, lights stay on even with ignition off.
Position II (all the way out) - parking/dash lights lights on, low beams on, high beams or fog lights on by switch
I'd like to chime in here, albeit a little late.
My 318iS is Canadian Spec with winter package.
I've yet to notice any difference between the us spec and Canadian spec, headlight wise. As Dave said:
Off Position (all the way in) - all lights off, low beams off.
Position I (one click out) - parking/dash lights only, no low beam or fog light function.
Position II (all the way out) - parking/dash lights lights on. Additionally, with ignition switch in 'Run' position, low beams on. igh beams or fog lights on by switches.
To expand upon that, In Canada all vehicles imported after January 1, 1990 required daytime running lights.
Edit: Somewhat contradictory to my statement, My manufacture date was September 1990, yet it does not meet import requirements of the time. Go Figure.