UPDATE 3/2/2014:
Here is the video of my Infinity BassLink Subwoofer located in the trunk, how I ran my power and other wires, as well as interior trim removal.
Infinity BassLink Subwoofer Install
BTW, the wiring harness is exactly the same as the 10th Gen Corolla with the same wire colors. A good color guide can be found here:
http://www.installdr.com/harnesses/toyota-wiring.asp
The 2014 Corolla has a lot of subwoofer "rattle" in the rear quarter-panel area compared to the 2005 Corolla, so plan on spending some dough on DynaMat or the like, especially on the inside of the quarter-panel where the sub sits.
Rmpl
