I have a house built in 1967 and don't have neutral on each box. A number of years ago I switched to Insteon switches that "Paired" with each other and did not require a neutral wire. I am switching to z-wave switches and only the main switch requires a neutral.
The problem I have is this:
Box 1 Line Load Traveler
Box 2 (Middle) Line Load Traveler
Box 3 Line Traveler wire to light
I changed the switches 7 years ago and don't have the original wiring diagram. The switches were always 4 way.
The question is, the middle switch only has three wires and should require 4 wires. How do I wire my 4 way switch to accommodate this?
Fancy drawing attached
