I was trying to install an Ecobee thermostat, and there was no C wire installed. When I went to install the power extender kit, I saw the standard C wire terminal was broken out of the black plastic casing, and I couldn't attach the C wire. There appears to be a secondary C terminal that is a different style with a plastic plug plugged into it, and then the wire is spliced and connected to the wire heading to the AC unit. Can I add a second wire to this plastic plug, is this a secondary C terminal that should work fine? I attached a pic.
Thank you!
Best Answer
That looks good to me, the second "C" terminal connects to the chassis in the background of the photo so it most likely is equivalent to the screw-down terminal.
fitting a crimp-on fork lug to the wire would be another alternative if you really want to connect to the screw-down terminal.