Problem description: I want to change the original wall switch that only controls the lights into a wall switch with a jack that can control the lights.

There is only the live wire in the switch, that is, the control line, which goes in and out. If there is no neutral wire, you can't install the socket. So you need to find the zero line from the junction box of the lamp holder, and then pass the zero line through the wire tube connecting the lamp holder and the switch box. In this way, you have completed the wiring; Then you need to buy a panel with a switch in the socket. First, connect the switch with the live wire (L) post of the socket with a short piece of wire, and connect the zero wire to the zero wire post (N). The wiring method on the switch remains the same as the original one. However, this socket has no grounding wire, so you need to pay attention when using it.

☆☆☆ The above answer comes from Baidu knowing the team "I know the decoration". If in doubt, you can continue to ask; If you are satisfied, please click "Select as Satisfied Answer" below my answer. Thank you! ☆☆☆