1.1K views · 29 reactions | The colors on a thermostat wire are there as a reference so that you can connect them to the right points on the other end. When looking for a short, check if the yellow wire is connected to other conductors when it shouldn't be. Watch Bryan Orr give a quick lesson on diagnosing open and short circuits. https://www.youtube.com/watch?v=mc2MsMmMuCs&t=237s #hvac #shortcircuit #opencircuit #electrical #thermostat #heating | HVAC School | Facebook