I'm trying to connect the C wire in my Goodman furnace in order to install a new thermostat. I've read all the posts on this forum about this specific issue so my question is whether i'm in the right path or not.
Here are a couple pictures of my transformer and the R G W Y and C terminals.
As you can see, on the lower left side of the transformer I have two blue wires and one wire connected to the chasis. From what I understood from other posts, one alternative is to use a piggyback connector to link it to the C terminal.
I don't know if you can appreciate it on the picture but the C terminal is on the bottom and there's a blue wire connected to it that's also connected to the chasis.
So, to sum up my question is: do I have to use the piggyback connector or being both points connected to the chasis the only thing I have to do is connect the thermostat to that C terminal?
Thanks in advance
Best Answer
You should be able to use that screw terminal for the C wire in the bottom picture. I assume that the blue wire on the spade terminal goes to the 24v transformer? It looks like the transformer has a red wire and a blue wire coming off it. The red wire from the transformer is the "R" and the blue wire would then be the "C" wire.
Looks like an easy hookup - on some older units to have to hunt around more to find a good connection point.