Re: Painless is a pain in the a$$...
A lot of others who have gone through the Painless pain here have posted their work throughs, including the ignition switch wiring. Search "painless ignition switch" and you should find what you need.
For the NSS, I'm not following what your saying. The OE NSS should have a purple with white coming in from the ignition switch that is hot with the key in the start position, and a solid purple going out to the starter via the fusebox/bulkhead connector. The switch is closed when the gear slector is in park or neutral, so as far as I know as long as you have a wire coming in from the ignition switch, and a wire going out to the starter, it doesn't matter which is on which NSS terminal.
69 'vert project big block/TKO 600 RR
68 'vert driver RS clone -- gone!