HELP A/C heater switch

Here it is, take a look at the 1st diagram. The ac/heater vacuum switch, it has an "empty" terminal(right beside where C1 connects). But in the 2nd diagram, you clearly see a jumper wire from that empty terminal to the one beside it(labelled C1A). Also in the 1st diagram it doesnt show the temperature control switch that is in the 2nd diagram(C2 & C2A) Subtle differences that had me and dad scratching our heads. As I said we had one diagram, then spoke to 67dart273 and his factory schematic was different.