I am in the process of replacing a single stairway light with a series of three lights (spaced apart). The previous setup included two switches and one light. One of the switches at the bottom of the stairs and one at the top of the stairs.
The two switches are connected with 12-3 (I tested continuity with a long wire). The power source was wired into the light along with wiring from the top switch.
This brings me to my question: Does it matter where power source is introduced in a three-way circuit?
Edit #2 – Updated Diagram of Potential Solution What if I keep the existing /2 cable going to all of the lamps and instead splice into the existing power source (inside a junction box) and run the now longer power source to the switch at the top of the stairs? Below is a diagram – I think I have everything connected properly.