I am replacing a 3-way switch that controlled two lights in a bathroom. There is only one switch, but controls two lights. The old switch worked fine. But now when I replaced it, in one switch position one light is on one light is off. In the other switch position, the lights switch so the other is on and the one that was on is now off. I tried a different 3 way switch just in case it was a bad switch. I also tried switching the red and white wires just in case I messed something up but the same thing happens. Any ideas? Thanks in advance!
You are probably not replacing a 3-way. A 3-way switch system uses two switches to control one device. Try using a regular(single-pole) light switch. Connect the the 'live' line or power wire to one side of the switch. Now any device(s) connected to the other side of the switch will be controlled by the switch after you turn the power back on.