@paulalfarojr
please help me , i am facing same problem and i have already connect the connector according to you, my stepper motor and driver are working properly with another axis but not with extruder
i am using ramps1.4 and arduino mega2560

The TAZ 6 does automatic leveling by probing the corners of the bed. You'll have to change the Z offset through the printer's menu. If you are adding a 3 mm plate, then you would add 3 mm to the Z offset.