3 Wire Servo to 2 Wire Servo, Bluetooth HM-10, Arduino Uno, Blynk Project Help!!

The motor controller was taken out so that it can rotate 360 degrees. It was limited to 180 degrees before. I feel like it should be as simple as a light bulb. You can turn it on by pressing a button and it will spin. Then when no power is being supplied the servo/light bulb stops spinning/turns off.