I do not know much at all about "gasser". I opend diagram and saved it to desktop, enlarged it and found the following (no post numbering):
(Looking from back of switch)
12 o'clock post has 2 wires connected, one goes to engine light, then to oil sending unit. The 2nd goes to small post on selenoid.
3 o'clock position has wire gong to fuse.
6 o'clock has one wire that goes to ground.
9 o'clock has wire that goes to micro-switches.
Hope that helps....