Help with 3-way wiring

Devices & Integrations Connected Things
#1

I have 3 light switches in my upstairs hallway. I want to change them to all zwave. However can’t figure out what to plug where. I have a 3-way dimmer switch and one aux switch to replace the 3 existing.

Attached is a picture of the master switch current non zwave wiring and the second switch in the hall wiring. 3rd switch is not pictures but imagine it’s same as secondary.

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#2

That first pic (with white wires bundled in back… or maybe it’s just texture-coat overspray on one or more of the colored wires?) looks like it might be a four-way switch wiring. Normal convention is:

  • Green = ground
  • White = neutral
  • Black = hot (unlike in DC wiring, where black is ground return; with AC, you’ll have two of these)
  • Red = traveller (required for 3-way and 4-way)

You can run a 3-way switch without neutral, but not a Z-wave 3-way. Neutral is required to keep the Z-wave radio powered so it can receive commands.

#3