04 ranger power locks not working

I am assuming you have a green and a blue wire on the actuators.  Apply 12 volts to the blue wire and briefly touch the green wire to ground.  If this does not make the actuator move or attempt to move, you need to reverse the wires.  Apply 12 volts to the green wire and briefly touch the blue wire to ground.  One of the above situations should make the actuator move.  If it does not move, losen the screws that attach it to the lock rod, try it again.  Let us know what you find out.