I dont believe that the knobs on my 67S look like the ones in your pic,, at least they dont resemble the ones that were in the car when I got it..,, but its a source to check.. this is a pic of the dash.. still curious to know the function of the third, unknown knob,, I know Fog lights and Rear Window Defogger,, but how about the third knob,, what does it control?? Warren??