How can I properly wire a 3-way switch with power at the switch using a diagram as a guide?

To properly wire a 3-way switch with power at the switch, follow these steps:

1. Turn off the power to the circuit at the breaker box.
2. Identify the power source and the two 3-way switches in the circuit.
3. Connect the power source to the common terminal of the first switch.
4. Connect the traveler wires to the other terminals of the first switch.
5. Run a 3-wire cable between the two switches, connecting the traveler wires to the corresponding terminals on the second switch.
6. Connect the common terminal of the second switch to the light fixture.
7. Turn the power back on and test the switches to ensure they are working properly.

Refer to a wiring diagram for a visual guide on how to properly wire the 3-way switches.