List Of Light Switch Two Black Wires 2023. It's essential that you determine which black wire is hot before. Web if the light turns on, the second black wire you connected to the switch is the switch feed and the unconnected black wire is the feed to the other loads.

2 blacks wires (hot & lead) 1. I opened the wall plate and found that it has two red wires and two black wires and one ground (so 5 terminals in all). Web three wires will be attached to your switch: