Microwave turntable would not turn

Turned off circuit breaker to microwave. (Built-In microwave). Unscrewed four screws at bottom panel of microwave to expose electrical wires/plastic plug to existing microwave motor.
Disconnected plastic plug/clips to motor and microwave lights(to allow entire bottom panel to drop down fully from back hinges). Unscrewed mounting screw for motor and removed old motor. Replaced motor and screwed mounting screw back in. Re-attached electrical connections for motor and lights. Closed panel and screwed bottom panel back on. Turned circuit breaker back on. 15-20 minutes start to finish.