@MKelly1
Post a picture of the current thermostat here.
I see a C terminal and a spare blue wire. Verify that the blue wire isn't connected to anything at the thermostat. If it is not in use, then you can connect the blue wire to the C terminal on both ends and you'll not need the Nest Power Connector.
To ensure that I see your reply, please tag me using @Patrick_Caezza
