![Wiring help in old house. Nothing in the setup videos or PDF's match this wiring set up. My Home was wired in 1950 and I am unsure what is common wire here, Wiring help in old house. Nothing in the setup videos or PDF's match this wiring set up. My Home was wired in 1950 and I am unsure what is common wire here,](https://preview.redd.it/wiring-help-in-old-house-nothing-in-the-setup-videos-or-v0-t1qbfs4ezhca1.jpg?width=640&crop=smart&auto=webp&s=e415db6d40da7da5e95f0de3049e6392432e22d2)
Wiring help in old house. Nothing in the setup videos or PDF's match this wiring set up. My Home was wired in 1950 and I am unsure what is common wire here,
![Add-A-Wire Accessory, Briidea Common Wire Kit for All 24VAC Thermostats (4 to 5 Wires), White - Amazon.com Add-A-Wire Accessory, Briidea Common Wire Kit for All 24VAC Thermostats (4 to 5 Wires), White - Amazon.com](https://m.media-amazon.com/images/I/618VyCSMKqL.jpg)
Add-A-Wire Accessory, Briidea Common Wire Kit for All 24VAC Thermostats (4 to 5 Wires), White - Amazon.com
![wiring - Three way switch with common terminal hard-wired to traveller - Home Improvement Stack Exchange wiring - Three way switch with common terminal hard-wired to traveller - Home Improvement Stack Exchange](https://i.stack.imgur.com/f7guU.jpg)