If you wish to add a light fixture it is best to extend the wire from the existing light fixture or connect the new fixture wiring at the switch box where the existing fixture is fed from. To control lights from 2 locations you need two 3 way switches.
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How to add a 3 way switch to existing light. Feed a length of 14 3 type nm cable or 12 3 if youre connecting to 12 gauge wire between the two boxes. Enjoy your new light fixture dave. Light fixtures and 3 way switch diagrams electrical question. Yet here i am adding a switch to an existing light. This way you will be sure not to interfere with the wiring that is dedicated for the 3 way switches at each end of the stairs. How to wire a three way switch to a existing single pole light switch circuit.
The location for the lights and power source may vary but regardless of this the connections to the switches will always be the same. Connect the wires to the new 3 way switches with ground screws using one of the two wiring diagrams fig. Connect the hot wire from the source to the common terminal on one 3 way and the hot wire from the lights to the common on the other 3 way. White black and red plus a bare ground wire. I have added an additional light sconce to a three way switch. Dominick amorosso decemberj2012 110 volt electrical 11 comments 24039 views in this video i explain just how easy it is to add a three way switch to an existing single pole one switch lighting circuit.
I have scabbed the neutral white from a near by outlet because there isnt a neutral white wire in the switch box. This is about a 15 min project plus the time it takes to chase the wire took me about 30 minutes to chase the wire. If i can do it so can you. The 14 3 cable has three insulated conductors.
Gallery of How To Add A 3 Way Switch To Existing Light
