Hi Readers,
I need help with an existing double wall switch. These two switches
(on opposite sides of the room) used to control an electric outlet (for
a table lamp). I rewired it to control the new ceiling-mounted light
fixture I installed. I did something wrong: each switch will turn the
light on and off, but I cannot use one switch to turn on the light, and
the other to turn it off. Any ideas on what I did wrong?

Any advice appreciated.
Thank you.