Two Way Wiring A Double Light Switch Uk. Two way light switch using 2 core cable there are different ways to connect up two way lighting circuits one way is to use a twin earth cable between the two light switches. On the side of the switch without the metal bridge connect the remaining black wires one to each screw terminal.
In one switch position the com terminal is connected to l1. Secure the switch to the box with the top and bottom screws. Two way switches have a com terminal as well as l1 and l2 terminals.
These are typically labelled com l1 and l2 some may label the l1 and l2 positions as 1 way and 2 way.
In the other switch position it changes over so that com is connected to l2. To wire a double switch you ll need to cut the power remove the old switch then feed and connect the wires into the double switch fixture. A common c l1 and l2. Two way switches have a com terminal as well as l1 and l2 terminals.
