Used to draw wires, the data is transferred from point B to point A.
Primary fire:
Draws a wire between the chosen input and output.
Secondary fire:
When not drawing a wire, selects input on the targeted object. When drawing wire, pins the wire at the point aimed at and continues wire (for getting a better overview and a cleaner layout). After shooting an object with several outputs, choose the desired output.
Reload:
Clears the selected Wire path (it should be blinking).
Notes:
Brief
The Wiring Tool is the one you'll use most within the Wire Addon.