3 Way Switch Only Works When One Switch Is On. How it works is that the hot wire coming in from the electrical panel is connected to the common screw of the first light switch in the circuit. Wired up a 3 way switch.

The wires that connect the two light switches to each other) attach to these two screws, and it doesn’t matter. The hot in this schematic is never connected to the lamp unless the lamp is illuminated (unlike in a carter). #2 when removing the wires from the old switch not taking note of what wires are going to what screws.
I Have Tried Every Possible Combination On My Own But Still.
If you can’t find one, an electrician will also do. Some of the other common problems you'll need to address include: Wired up a 3 way switch.
When Both Toggles Are Up Or Both Are Down.
2 brass terminals for the 2 traveler wires, and 1 common (black) terminal for the common wire. The hot in this schematic is never connected to the lamp unless the lamp is illuminated (unlike in a carter). I know it's something silly but before i spend the next 30 minutes wiring, running downstairs, power on, check repeat, thinking someone might be able to immediately recognize this issue.
It’s Also Possible That Only One Of The Switches Is Broken.
You should hire an exorcist. If there are only two switches then you can not use a four way switch to replace a 3 way switch. The top is an atypical schematic for the usual traveler system.
#2 When Removing The Wires From The Old Switch Not Taking Note Of What Wires Are Going To What Screws.
You should notice four screws, two on each side. One screw is black and the other two are brass colored. The third switch is for the light outside.
One Of The Switches Only Works When The Other Switch Is In The On Position.
On the other side of this switch are two brass screws. Another example is when the wires are not connected properly. Switch a works regardless of position of switch b.
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