noun
wiring
WY-er-ing/ˈwaɪərɪŋ/
The network of wires connecting electrical components.
The wiring in the junction box connects neatly to the terminals.

Etymology
Formed from wire with -ing, this noun names wires collectively rather than just the activity of fitting them. That collective meaning became especially associated with electrical wirework.
In context
the wiring while I was doing that in the kitchen I also ran wires for some recessed hallway lights switch for those lights and an outlet
More examples
- An electrician checks the old wiring before we move in.
- Faulty wiring causes the car's headlights to flicker.
- This diagram shows the wiring inside the thermostat.
Forms
wiring
wire noun — A thin metal strand that carries electricity.