Ignition switch wiring

[Alan72Chevy]

I'm putting in a new ignition switch and fixing some butchered wiring to it. It starts and runs fine. Just has some wires I don't know if they should be hooked up or what they go to. Here is what I have. Truck is a '72 Cheyenne C10.

Coming down to the switch, from the harness that goes over the gauge cluster, there are 6 wires:

Red - connected to "battery" on switch
Pink - connected to switch can't remember which terminal but works so I think is right
Purple - connected to switch can't remember which terminal but works so I think is right
Brown/Yellow - connected to "accessory" on switch
Brown - thick wire - disconnected not sure where it should go
Tan - thin wire -disconnected not sure where it should go

Now on the switch there are also some wires not connected

Terminal G1 has 2 green wires going to nothing
Terminal G2 has 2 brown wires going to nothing
and there is a second "battery" terminal with a red wire going to nothing.
There is a second brown wire coming from "accessory" where the brown/yellow connects, but second wire is not connected to anything

The ones in blue above are the ones in question. Any help is greatly appreciated! Let me know if anything is not clear or if I need to provide more info.

Thanks!
Alan