Help me behind the dash!!

As hacked up as that connector wiring is, I'd do the same thing as I did on my 67--because the PC connectors are in such bad shape. Just scrape the board clean and solder pigtails to the board in place of the pins. Then go to Mouser, Digikey, or even you local RadioShack and get one or two Molex style connectors and replace the whole thing

So far as pulling the cluster, drop the column down, pull the speedo cable and ammeter wires, and of course the connectors and it should come right out.