Review Of Light Switch Black And White Wire Ideas. Web the white wire to the switch should be marked black to indicate that it is hot. The three white wires are neutral.

See the full instructions here: Web three wires will be attached to your switch: Ask question asked 1 year, 1 month ago modified 1 year, 1 month ago viewed 14k times 7 i am replacing an old worn out light switch and it seems to be wired incorrectly.