where should I tie into harness for column to console conversion and other wiring

Have you looked over the diagram. Even Dart/ Valiant will be similar. You need an orange dimmer controlled dash lighting wire for the shift quadrant/ tach/ etc

You could run a new wire right from the fuse panel for the lighter

If you have courtesy lights you need to tie into the yellow dome wiring........this is the switched ground side.........and a power wire. For that you could T off from the lighter to one side of the courtesy lamps

The connector you have there is the turn signal switch and will do you little good