I’m sure I’m posting this in the wrong spot but I figured that the most knowledge of old stuff would be here. My neighbor has asked me to help him with a Allis Chalmers tractor from the early 60s. It has a Briggs 23D engine. I can’t figure out where the wire coming from the ignition switch goes on the points. There’s also a short wire coming out from the points with a ring on it that really doesn’t seem to have a home. Engine runs great but won’t shut off because the ignition wire isn’t hooked up. Thanks for your help