Source is our battery pack, the message or what relays the message from source to channels will be the black/red wires.
Each circuit can be viewed as a separate channel for a message to be sent through.
These are all the possible receivers that can come from the channels. Each would convey a certain type of message or notification from the original source.
This is what the model would look like assembled together.
Hopefully in the end we will be able to get a couple LED's working and be able to show an actual demonstration of how that message can be sent through all the circuitry.