The Wire Tool is a new tool added in A16 as a part of the new Electricity game mechanics.
A wire tool is used to wire electrical components. Focus on any electrical component and use the secondary action to add a wire to a parent and once again to complete the connection to a child component. Focus on any electrical component and use the primary action to remove or cut that components wire to its parent component. With the wire tool equipped you can see many useful things including: a components power usage and power status, the flow of power from parent to its child component and the aiming of objects with motion sensing.
Warning: Some prefab lights in the world are lit up without power. If you use a wire tool on such a preexisting light it will go out and never work again.
When wiring from one device, Wire Tool will allow 15 blocks distance from the first device until the wire is disconnected. While wire connectivity indicator shows possible wire connection away from 9 blocks, it is possible to extend this by 4 through interaction reach, resulting in 13 blocks reach.