In this video, I talk briefly about a 3-Way wiring error that I have frequently encountered. The "fix" can be simple, or it can be a bitch, depending on how inept the installer was in the first place. In a previous video, I explained why I almost hate the conventional names for switches used here in the US. If you're open minded and wish to "think it through," see my videos entitled "LOGICAL Electrical Switches" (#1, #2, #3).
DISCLAIMER: I am NOT an Electrician. In fact, I'm not a professional anything. But I DO know that BEFORE you do ANY electrical work, on ANY device, TURN OFF THE POWER. That way you can continue to live . . .and watch my upcoming videos! Isn't it great?