Last night the light just came on by itself. Took the wires off the switch light stays on.

3 Way Switches Explained How To Wire 3 Way Light Switch
3 way switch light stays on. The light wont go off so i changed the switches and replaced the old switches with new 3 way switches on both ends. The travelers the other. The light and switch single pole have been in operation for 15 years. Heres what should be happening in your case in order for the switches to work. To summarize i have a light on a 3 way switch that will not go off via the switches. After switching to leds or when replacing a faulty led lamp in some cases the led continues to glow weakly after turning the light switch offobserving this effect the first time could be very surprising the light switch is in the off position and the led lamp continues to glow.
In most of these cases the led just lights up very weakly but also this could be annoying if the luminaire is mounted in your bedroom for example. Here are our picks for the best of 2020. On the upstairs switch were two black wires old ones with a cloth type insulation and one black wire with plastic insulation. Smart light switches are wise investments for your home adding programmable control to even the most basic bulbs. I replaced both switches with new 3 way switches and the light still wont go off. Electrical 3 way switch light is on when both switches on or off otherwise works as expected.
Turn the switch off then repeat the test. If the led goes off the switch is good and the wiring is faulty but if the led stays on the switch is bad and needs to be replaced. Light stays on tried changing wires light stays on. Led lights glow when switched off. For a typical leviton 3 way switch the 1 and 2 switch are across from each other at the top. Home improvement stack exchange 3 way switch light is on when both switches on or off otherwise works as expected.
As i stated i changed the switch but the light stays on constantly even without being connected to the switch as long as the breaker is onthe box has three set of wires blackwhiteground from the fixture a blackwhiteground and a blackredwhiteground. Each 3 way switch has 1 and 2 on the switching screws. That hot wire should be connected to the common screw on the 3 way switch. Turn the switch on then touch the tester leads to both of the brass terminals on the switch and verify that the tester led goes on. On the switch that was replaced 3 or 4 got switched with 1 or 2. This is a dual switch one for the outside light one for the inside light which stays on.
We have a hall light that has one switch upstairs and one switch downstairs. 3 or 4 would go on the bottom. 3 or 4 then goes on the bottom screw the isolated one. One wire entering one switch box should be hot from the power source if the circuit breaker is on this wire is hot.