NEED HELP ASAP!!! Headlight Switch

I am trying to rewire my 73 Dodge Dart Swinger with a apinless wiring harness. I am currently working the dash and have run into an issue. I am trying to plug into my original headlight switch but can not determine what the posts are on the switch. Does anyone have a giagram or any idea how to explain which post is what on the headlight switch?

Thank You!

Robert