Beg, borrow, steal, or purchase some of those connectors with wires left in them and splice to the wires. I've been trying to get my boss to buy a Berg System crimper for making those connectors, but the $700 Newark wants for the crimping tool is outrageous. I have seen some 3 and 4 pin IDC style connectors with "punch-down" contacts, that definitely have promise. It pays to visit your local Electronics Surplus center and browse amongst the boxes and skid racks.
Hoot