Get support for your T5 SMART THERMOSTAT, from installation and manuals to troubleshooting tips and replacement information.. 5 Take a picture of how your wiring looks right now Be sure to include the letters next to the terminals where the wires are inserted. This will be a helpful reference when wiring your Lyric thermostat. Tip: If the color of your wires has faded or if 2 terminals have the same wire color, use the wire labels provided in the package to label each.
Honeywell Lyric T5 manual Honeywell Lyric T5 Manual PDF Download Free Honeywell Thermostat Instructions User Guide March 20, 2026. L3 Firmly connect remaining wires from Step 7. Push down on the tab to put remaining wires into its corresponding terminal on the Standard 16 Connector (one wire per terminal) until it is firmly in place. Gently tug on wires to verify they are secure. To release wires, push down the terminal levers on the on sides of Standard 16 Connector.