List Of Adding A New Light Fixture To An Existing Circuit References. Adding a light to an existing circuit. Adding a new light is easy because you can wire it to the existing light.

This project requires an understanding of how a light switch is wired and a few basic tools. I've attached a diagram of the switch that i'm hoping to tap into (switch 1). To safely remove an existing fixture, always start by turning off the power supply by switching off the circuit breaker or removing the fuse.