Factory Rear Window Defrost 1973 Dart Sport- how do I turn it on?

383Scampman said
It is a toggle switch on the lower portion of the dash to the left of the steering wheel . The switch goes directly to the fuse panel . Where in the fuse panel I'm not sure .

What he said^^

I had a 73 Dart Sport, which had this option, and I should have never sold.