I've been looking for the plug in my 2013 so I can connect my brake controller up and with the help of some of the threads in this forum I found the plug in the photo. Its the right shape but the wires dont quite match the harness that came with the tekonsha.
It's located just above and left of the clutch pedal. It has blue, black white with grey, green and another small blue. It appears if I connect here, the green wont be used.
I suspect the green is for some kind of illuminations that the Tekonsha doesn't used. Anyway, did I find the right plug or do I keep searching?