2606 light switch wiring

Hi, I'm getting tired of being in the dark so I checked on hooking up my headlights and the switchable taillight. I pulled the switch out of the dash and someone had cut all the 3 wires. It's a 4 position switch.

I can see where the bigger guage hot/black wire comes in. I assume it it hot, maybe not. There are 5 terminals on the back. The one by itself at the 6 oclock position(looking at the back and I may have it upside down) has no wire. The 2 oclock position has the black 12 guage wire. The 10 oclock position has no wire. The 4 oclock position has a 16 guage wire that goes to a round plug-in dash light (which will need replacing if I can find one). The 8 oclock position has a purple 16 guage wire that has been cut.

What is throwing me is that the 4 and 8 oclock terminals are longer than the others and have a spring jumper between them. I'm not sure what the purpose of the spring jumper is. Any ideas? I'm also wondering which one is the hot wire for sure and if one is a ground. On the switch, one side would be off but I'm not sure what the other 3 would do.

I will have to run new wires from the lights. The harness coming from the front of the engine has all wires cut except the 5 that come from the regulator, coil, and the big one on the alternator. They are also cut and hanging loose back below the dash. I have 6 wires coming across the top of the clutch housing from the starter solenoid which are hanging loose in mass under the dash. Besides hooking up the lights I want to tidy up the wiring. Probably replace the amp guage that doesn't work. It also has a fuel guage with wires from it but no sender in the tank that I know of.

Thanks.

Maybe a wiring diagram might explain the answers better...Click the link.
606 Wiring diagram

Thanks. From the diagram and checking the switch with a continuity/ohm tester I see the left position #1 is off, position #2 & #3 do the same thing headlights, instrument lights, and tail lamp. Position #4 gives the headlights, instrument lights, and an alternate wire to the tail light. I'm guessing position #4 will run a taillight or flassher but I'm not sure right now what my rear light is except that it has a switch on it. I'm not sure why the 2nd and 3rd positions do the same thing.

However the alternator and voltage regulator setups aren't the same. Mine must be a conversion of some sort.

Unlike the diagrams, my big alternator hot wire goes directly to the amp guage (which doesn't work). It has 3 wires coming off the voltage regulator and one wire coming of the coil that go through the harness and end up in that mess between the instrument panel and the starter solenoid. None of the diagrams are like that I know I've read on here about the hot going to the amp meter. The diagram has the hot from the alternator going to the starter.