Wiring Diagram

One of our thermostats quit last week, but it’s under warranty. Ecobee promised to send a new one (and they did) but time is an issue when it’s 85F. Bought one to use as a temp - taped in place rather than screwed, and will take it back this week. A photo of the wiring is a good way to be sure I connect the new one properly. The plan worked and we were cool again in no time.