Hidden trailer hitch wiring

Where has toyota hidden the trailer hitch wiring on a 2016 tacoma trd sport ? Mine came without the trailer package ,but my dealer said they put the harness in there, somewhere, any help?

 

Just yesterday I was exploring what I needed and I did see an available harness plug-in. It's running in same line with the right tail light wires. I need to get back under there and take a pic so I can see the right plug-in but looks like many possibilities I've seen online for 4 pin hookup

 

My problem is that the 16s ,at least the trd sports,have the knockout for a 7to4 pole Hopkins trailer connector,so I need a harness connection from factory wiring to a 7 pole connection.

 

Right mine is a 16 and same setup. Went to TOYO of Dallas and they said sorry STILL no harness has come out as of Feb 13 ....So I'm looking at least for the 4pin so I can bumper tow.

 

Any update? Found out my 16 Tacoma doesn't have wiring. Really lame...

 

Here it is to connect to the 7 pole trailer connection. etrailer.com has the parts. First is C56282 ,this pretty much is plug and play,second is 40985 and last is for the multi tow trailer connector in the bumper ,which is 40975.there is splicing involved with the 40985 , all instructions are on the website .just put in year,make ,model and that your truck is without tow package . In the (ask the experts ) section under the C56282 , they give you full instructions, scroll to the third Q&A , it is a very detailed answer even if you are going to use a trailer brake. Toyota will have everything shortly ,might be a little more money.