The Electrical Panel Went Dark

First I opened the door to the oven so that when I turned off the circuit breaker I got the right one. I then removed the four screws holding the panel on, disconnected the wires, removed the screws holding the assembly in place, put in the new assembly in place, put the screws back in, re-attached the wires, and screwed the panel back on, ran down and hit the circuit breaker, and voila' we have light.