I started a rewire of my 51 Chev 1/2 Ton Surburban about a year ago. Old age has apparently caught up with me or just have a severe case of "CRS". I forgot which post is which. Ignition switch has three posts. One post is centered at the bottom. I presume this is the hot (to battery) post. Which one of the other two that are situated above and off center of the hot post is the #2 post. The switch is orginal. Converted the system to 12 volt about 5 years ago. Thanks in advance......