How to replace an old (1980s) light switch that has 2 black wires and one red wire (plus ground) - Quora
![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
![Replacing a switch to an outlet, not sure about two black wires going to same terminal. Is this a three-way switch? Can I just wire the new switch the same way and Replacing a switch to an outlet, not sure about two black wires going to same terminal. Is this a three-way switch? Can I just wire the new switch the same way and](https://preview.redd.it/replacing-a-switch-to-an-outlet-not-sure-about-two-black-v0-97io46fapra91.jpg?width=1575&format=pjpg&auto=webp&s=370acbd8ba29505f7d0132b4c655a414f708697c)
Replacing a switch to an outlet, not sure about two black wires going to same terminal. Is this a three-way switch? Can I just wire the new switch the same way and
![lighting - How to convert Light Switch from 2 red, 2 black, and ground to 1 traveler, 1 neutral, and a ground? - Home Improvement Stack Exchange lighting - How to convert Light Switch from 2 red, 2 black, and ground to 1 traveler, 1 neutral, and a ground? - Home Improvement Stack Exchange](https://i.stack.imgur.com/JYreh.jpg)
lighting - How to convert Light Switch from 2 red, 2 black, and ground to 1 traveler, 1 neutral, and a ground? - Home Improvement Stack Exchange
![Two black wires connected into a single black wire in light switch box - Home Improvement Stack Exchange | Light switch, Light dimmer switch, Dimmer light switch Two black wires connected into a single black wire in light switch box - Home Improvement Stack Exchange | Light switch, Light dimmer switch, Dimmer light switch](https://i.pinimg.com/originals/28/ae/94/28ae94c6b17004bfea0cdbfba8dbf891.jpg)