Headlight Switch Cranks Engine??

Like in Young Frankenstein, she removes the candlestick, and he blocks the rotating bookcase with his body, and gets smashed up a little. Then he says DON'T PUT THE CANDLESTICK BACK, just shove on the opposite side of the bookcase. This frees him up, as he came close to disaster. In other words, this may be a job for someone who really knows what's going on. By the way, on my GREEN 1970 Dart, you can rotate the headlite switch counter clockwise, and the dome light comes on. Yours should be the same. This may be a clue. Headlite switch is giving problems, or wired up wrong. Yours is a 1972? Is that right?