I am in the process of installing a new thermostat that requires a c wire. I checked my thermostat to see if it has a c wire running to it and it does not. After doing lots of googling and watching youtube video I think I know what to do but would like somedody that knows to verify it is correct before I attempt something like this. 

I noticed where the wires run to the thermostat it has a extra wire (orange) not in use. 

[![thermostat wiring][1]][1]

I then checked where the furnace to verify the same wire is not attached to nothing and it is not. 

[![furnace wiring][2]][2]

If I am looking at it correctly I can connect the extra wire orange to the to the orange wire from the furnace which is not connect to anything (which if I am reading it right is the c wire) This would work correct? I am new at this and do not want to mess anything up.



  [1]: https://i.sstatic.net/d7udj.jpg
  [2]: https://i.sstatic.net/Mf81g.jpg