31. My two traveler wires are in same color, I can’t tell Traveler-1 from Traveler-2.

A: You can finish add-on switch installation first and ignore the color guidance of traveler wires temporally. Don’t worry, it won’t cause any short circuit. And then power on the smart switch at the circuit breaker to see whether your switches work properly or not. If not, power off your circuit breaker again. Switching the wiring positon of T1 and T2 on add-on switch will solve the problem.