Re: starter solenoid wire
If it turns out you need to go back to AAW for more support, use the dial by name function and plug in B-o-c-k to get Donny Bock. He's heading R&D now I think, but he is the MAN when it comes to GM wiring.
If the "loose" purple wire is inside the car (I think that's what you're explaining), then you should find a loose purple/white stripe wire that pairs with the purple. The purple/purple white get connected to the neutral safety switch, which makes sure that the starter solenoid cannot be energized unless the automatic's shifter (selector, really) is in Park or Neutral. On a manual trans 67-68, the purple and purple white would just get connected together (no NSS on a manual trans 67-68).
VSS wiring would have to be run to VSS sensor outputs on the transmission. Maybe the instructions just mean to route the wires down through the shifter hole to the VSS? I used the mechanical speedo drive on my TKO, so I did not spend a lot of time looking at VSS wiring.
69 'vert project big block/TKO 600 RR
68 'vert driver RS clone -- gone!