![home wiring help - replacing light switch with 4 wires (2 red/2 black) | Electricians Forums | Electrical Safety Advice | Talk Electrician Forum home wiring help - replacing light switch with 4 wires (2 red/2 black) | Electricians Forums | Electrical Safety Advice | Talk Electrician Forum](https://electricians.s3.eu-west-1.amazonaws.com/data/attachments/2/2548-59ad0adf8951d298c6b0e1b28da81010.jpg)
home wiring help - replacing light switch with 4 wires (2 red/2 black) | Electricians Forums | Electrical Safety Advice | Talk Electrician Forum
![4 way switch wiring - Power from light fixture to light switch setup - Devices & Integrations - SmartThings Community 4 way switch wiring - Power from light fixture to light switch setup - Devices & Integrations - SmartThings Community](https://global.discourse-cdn.com/smartthings/original/3X/6/d/6d96c098b2f1fb5accaa4b1373368da6996e1b92.jpeg)
4 way switch wiring - Power from light fixture to light switch setup - Devices & Integrations - SmartThings Community
![My smart switch has 4 wires coming from it: a black wire, a blue wire, a white wire, and a green wire. My wiring in the installation spot is black, white, and My smart switch has 4 wires coming from it: a black wire, a blue wire, a white wire, and a green wire. My wiring in the installation spot is black, white, and](https://preview.redd.it/tq1qzdy4e7g11.jpg?auto=webp&s=b5697fb2e67b54b55b8d45350ebde193d1e1c1d6)
My smart switch has 4 wires coming from it: a black wire, a blue wire, a white wire, and a green wire. My wiring in the installation spot is black, white, and
![electrical - Can someone tell me what/how there are 4 wires on one switch and if they're necessary? - Home Improvement Stack Exchange electrical - Can someone tell me what/how there are 4 wires on one switch and if they're necessary? - Home Improvement Stack Exchange](https://i.stack.imgur.com/H0Ui8.jpg)
electrical - Can someone tell me what/how there are 4 wires on one switch and if they're necessary? - Home Improvement Stack Exchange
![4 way switch wiring - Power from light fixture to light switch setup - Devices & Integrations - SmartThings Community 4 way switch wiring - Power from light fixture to light switch setup - Devices & Integrations - SmartThings Community](https://global.discourse-cdn.com/smartthings/optimized/3X/c/a/ca7835be61bffcab86c8b6bd7f2bd27eb227d791_2_375x500.jpg)
4 way switch wiring - Power from light fixture to light switch setup - Devices & Integrations - SmartThings Community
![4 way switch wiring - Power from light fixture to light switch setup - Devices & Integrations - SmartThings Community 4 way switch wiring - Power from light fixture to light switch setup - Devices & Integrations - SmartThings Community](https://global.discourse-cdn.com/smartthings/original/3X/6/e/6edd8004346ae8ee681bde985764263f75506bdd.jpg)