Just got the car - a nice clean 65 230SL and I'm new to the forum. First of many future questions - What is the funtion of the switch in the back of the glovebox. It has a knob just like the other knobs on the dash, but seems to do nothing when I pull, push or turn it. At first I thought it was an engine kill switch since it was locked in the glovebox, but that doesn't seem to be the case. Admittedly, I haven't fully chased down the cable leading from the switch (as yet).