3 way switch wiring issue

Hi all,

First time poster, hope someone can help. I wanted to wire a new Z-wave 3 way switch and remotes switch into a hallway light. Currently two switches control the hallway light.

When I took the current switches out, this is what I found. The master switch has two black wires one red with one of the two black wires connected to the dark colored screw. In the back of this box the two white wires are capped together. See pic1

The other switch has black, red, and white with the white connected to the dark colored screw. See pic 2

Not sure what to do with the capped off white wires, what is hot, and what is neutral. Thoughts?

 

You need to open the fixture and show us the wiring there.
Do you have a way to measure voltage? I need to know if the black wire on the black screw in the first picture goes on and off when you flip the switch.

 

Hi joed,

In the fixture, it i just a black and white wire coming out of the ceiling.

The black wire on the black screw in the first picture stays at 120v when the switch is flipped on and off.

Thanks for your assistance.

 

Then there is another box or switch somewhere. There is power cable coming into the first box. There is three wire cable into second switch box. We need to see the two wire cable going to the light somewhere.
There is black and red on travellers in first switch. There is black and white on travellers of second switch. There has to be a box in between them where the cables change.