Step 7: Electronics! - Light Bulb Sockets
Anyways, the sockets have two connections for the electrical. One side on all the bulbs is connected all the way back to mains connection. The other side is connected to a relay (see next step), which is connected to the other side of the mains. So essentially all the light bulbs are connected in parallel, which is really the only way to do this.
Since the sockets had screw terminals for the connection, I used the obvious choice of crimp connectors to connect to them, which also saved some time on the wiring. (Anytime you can use crimp connectors you should, they're easy and reliable!)