hooking a 72 duster collumn to a 67 harness

A pink wire in a 72 column would be 12 volts to something that is hot at all times. Like ignition switch or hazard flashers.
Orange wires are illumination, most likely shift indicator in a column. Anyway... pink and orange wouldn't go together or serve the same purpose.
If the pink wire is in the ign' switch harness and not supplied, start wouldn't work.