Fog light installation question for '15 Yaris

[Netcom]

I have a 2015 Yaris LE 5 door built in France. I purchased a fog light kit off of eBay and took it to my local shop to have installed.
The tech found out that my Yaris is already pre-wired for fog lights and after installing the lights and housings themselves it was just a matter of plugging them in.
The technician also noted that the car had a relay and was already wired into the fuse panel.
The only thing he couldn't find was where to plug in the switch. A downloaded wiring diagram shows where the switch itself goes (to the left of the steering wheel by the dash light dimmer) but doesn't show where the plug is.
After a call to Toyota, the tech there said the plug should be taped up to the main wiring harness behind the instrument cluster.
At this point I told my local tech that I would take the car home and see if I can find the plug myself but after removing the instrument cluster I still cannot find a plug anywhere.
Does anybody have any ideas where to look ?