Step #4: Drill Holes to Route the Wires Outside of the Doorbell Housing
Find a drill bit that is the same size as the extension wires and drill five holes in the housing of the doorbell. Then feed the wires through them and close up the housing. Be sure to keep track of which wires are connected to what. It may help to label the wires with a small piece of tape.
Step #8: Solder the Circuit Onto a Printed Circuit Board
Once you are happy with how your circuit is performing, solder all the components onto a printed circuit board.
Step #11: Connect the Wires With Twist-on Connector Caps
There are two sets of wires that need to be connected. First take one wire from the male end of the power cord, one wire from the female end of the power cord, and one of the short separated wires. Connect these three with a twist-on connector cap. Then take the other wire from the male end of the power cord, the other wire from the female end of the power cord and the long separated wire. Connect these with a twist-on connector cap.
Step #12: Connect the Power Cords to the Solid State Relay
Now take the two short separated wires from the power cord and crimp on a pair of quick disconnect connectors. Fit these onto the load terminals of the solid state relay.
Step #13: Connect the Light
I chose to use a small CFL fluorescent light as the light for this project. To connect the light, I mounted it inside a small light socket, then attached the two remaining wires from the power cord assembly to the screws on the light socket.