Plug the black/red/white wire from your ESC into the output side of your servo tester, making sure that the black wire is on the - side. Do not plug the battery into the servo tester. Now plug the three wires from the motor into the three wires from the ESC in any order. Turn the knob on the service tester so the way counter clockwise. Lastly, plug the battery into the ESC using the main leads.