What Is Red Wire On Light Switch - It connects to the corresponding traveler terminal on the second switch to distinguish it from the black hot wire connecting the other pair of traveler terminals. Web now identify the black or red wire that leads directly to the light fixture you want to control. That covers the basic installation. Connect this l2 wire to the opposite screw terminal on the switch, labeled l2 or load. This is your l2 or switched hot wire.
That covers the basic installation. Web now identify the black or red wire that leads directly to the light fixture you want to control. It connects to the corresponding traveler terminal on the second switch to distinguish it from the black hot wire connecting the other pair of traveler terminals. This is your l2 or switched hot wire. Connect this l2 wire to the opposite screw terminal on the switch, labeled l2 or load.