I recently decided to upgrade my home with a GE 12727 smart switch, and I must say, it was an enlightening experience! As someone relatively new to smart home tech, I thought installing a smart switch would be straightforward. Boy, was I wrong! 
When I opened up the gang box, I was immediately faced with a confusing tangle of wires. The first challenge was identifying the neutral wire. I had naively assumed all white wires were neutrals, but after some research, I realized I needed to be more precise. I found a bundle of white wires nutted together and decided to use one as the neutral, but I wasn’t entirely sure if that was safe. After some experimentation, I managed to get the switch powered up, but I couldn’t shake off the worry about potential fire hazards.
The second issue was a bit more complex. The existing one-pole switch I was replacing was powering an adjacent three-way switch. There were three connections on two terminals, one of which was a piggyback to the other switch. I tried wiring the GE switch in the same way, but it didn’t work as expected. The push-in connectors didn’t seem to play well with the screw-in terminals, and I ended up with lights that were dependent on each other’s states. It was frustrating, but it also taught me a lot about how switches interact in a circuit.
After some research and trial and error, I discovered that adding a pigtail for the neutral wire was the solution I needed. It not only resolved the wiring issues but also restored the independence of the two lights. This experience has been a great learning curve, and I’m now more confident in tackling similar projects in the future. If anyone has tips or tricks for wiring smart switches, I’d love to hear them! 