2 Light 3 Way Switch Wiring. Its okay if this is too complex for you. A 3-way switch is larger than a single pole switch and has three screw terminals for wiring connections plus a ground.
The neutral is spliced to the white wire feeding the first fixture via cable C1where it is spliced to the neutral of both lights. For the third terminal one switch is connected to the hot supply wire while the other switch is joined to the light. Before jumping straight into the feature specific table lets go through some useful information.
The white LINE neutral wire gets connected to the white wire of the 143 cable.
2 way switching 3 wire system old cable colours 2 way switching means having two or more switches in different locations to control one lamp. The third wire is connected between one of the traveler terminals of the two 3-way switches. The L1 terminals of both the switches are connected to line or phase or live of the AC Supply. They are wired so that operation of either switch will control the light.