PCM connector: how to remove wires from connector?

there is a small piece of plastic that slides to side, unlocking connector(not all OBD I plugs have lock) then you insert the special tool which unlocks each pin individually.On OBD II its a light blue lock tab, OBD I is typically black but not always. tool is under $20 on Amazon and looks like a very small metal drinking straw with part of the side cut open stuck in a screwdriver handle. I have one that is in a triangle shape, three separate sizes for different gauge wires. Search Delphi connector tools.