There are two kinds: series and parallel. If series connection is selected, the power cord passes through one lantern and then connects to another lantern. If it is parallel, a power cord is divided into two parts and connected to two lanterns respectively, and then merged into one line;

Both of them use a switch to control two lanterns at the same time, remember that the switch must be connected to the zero line, otherwise it is easy to get an electric shock;

The current connected in series is relatively large, which is easy to burn out the light bulb. Relatively speaking, there are many parallel connections, but they are more expensive.

Parallel joints must be wrapped with insulating tape to avoid leakage.

Check the contacts of the socket connector of the lamp. The thread is the zero line (N phase), and the contact piece with the middle tongue is the live line (phase line). The live wires of the two lanterns are connected, and the zero wires are connected. Just find a single-phase plug and plug it into the socket near the lantern.