Can I use the T terminal in my furnace as the C for a Wifi Thermostat?
Note: the solution here is the querent's -- I'm simply writing it up in a CW answer to get this off our plate as the querent has not returned to migrate it from his question-edits to an answer himself.



SOLVED (01/04/15): I decided that the T terminal was exactly what I needed so gave it a try and everything is working perfectly. I also pulled in some 18-5 thermostat wire. Here is my setup, in case it might help someone else:

Furnace: Lennox G14Q3-60-13

Thermostat: Honeywell RTH6500WF

I've attached pictures of my connections.