electrical light wiring
Refers to the wiring specifically for lighting circuits, as opposed to power outlets or other electrical lines.
電灯線とコンセントの配線は分けてください。
Please separate the wiring for the lighting circuit and the outlets.
配線 is a general term for wiring or cabling, while 電灯線 specifically refers to wiring for electric lights.
Compound of 電灯 (electric light) and 線 (line, wire).