I have a dual-switch in a bathroom set that I'm doing other work on. I'll eventually replace it, but it has a terminal that I didn't anticipate. Here's my understanding of the terminals: 1 is ground (disconnected by me when pulling it out). 2 and 3 are the loads for the upper and lower switch. 5 and 6 are the line side, and this one has the tab broken off so that they are separated. So what is 4? There's no wire using it, but I'm not sure I...
Originally asked by BowlOfRed on Stack Exchange (diy) (CC BY-SA 4.0).
