FJR

When I ordered my 2018 Highlander Limited from my Canadian dealer, I requested and got both the 7 pin and a 4 pin connector along with a brake controller. The attached photo shows a 7 pin to 4 pin adapter stuck out from beneath the "7 Way" flap. That was not included. I only added it to test something. To use the 4 pin connector you must unplug the left 4 pin male, thereby making the 7 pin dead. Silly set up. I bought an aftermarket 7/5 pin replacement to neaten up the installation. See photo on right below.

There are no front tow hooks per se. If you look carefully at each end of the front grill, you may notice a small area of plastic that can be carefully pried out. Located deep inside is a threaded socket that will accept optional eye bolts available through your dealer. I tried to add photos but couldn't. If stuck, pry out the plastic grill caps and screw in the 6" long, .75" diameter eye bolts. https://www.youtube.com/watch?v=Fh0_OEtuyGI This video explains it for a 2012 Highlander. I bought a 2018 in Canada and Toyota no longer provides the tow eye bolts as part of the tool package in the trunk. The process is the same.