OK as some of you know I just picked up a 1968 mustang fastback with PS and air. ok now there is a pedal all the way to the left on the drivers side floor. when I first seen it, (Not thinking) I thought it was the E Brake pedal. but that is a pull lever. so I had my girl pump it a few times and it sounds like it pumps air into the AC pump under the hood. Am I crazy? what does the pedal do? why is it there?