Hey Rachel, no worries! For the System Sensor CO1224T, start by connecting the red wire to the positive terminal and the black wire to the negative terminal. Ensure a solid connection. If you’re integrating it into a fire alarm panel, follow the panel’s instructions for CO detector wiring. Don’t forget to test the unit after installation to make sure it’s functioning correctly. If you run into any specific issues during the process, feel free to ask for more assistance. Happy installing!