Here's a view of the controls of Ontario Northland Snow Plow ONT 560 taken February 2004. The guages you see are the air pressure guages for the huge wings and flanger. Below that is the Emergency Valve. On the top left are the switches for the plow's lights with all of those plugs below them being used for the electric heaters and fans used to keep the cupola nice and toasty. On the right of the photo is the edge of a seat. Whoever sits here is in charge of the horn, the radio, and the flange & right wing valves. Whoever sits in the left side is in charge of the left wing. Both Operators keep an eye on those guages.