You have the right unit methinks. Mine, as yours, is ODB2. When I connected my scan gauge the jack was very difficult to find. It's either left or right of the steering column. It may have a cap on it that kinda camouflages it, it may point at an angle or be tangled in a wire bundle. I removed a plastic panel under the steering column and finally found mine. Once I knew where it was I could access the jack without removing the panel. Good luck, look harder and methinks you will find it.
Vince and Susan
2011 Tiffin Phaeton 40QTH (Cummins ISC/Freightliner)
Flat towing a modified 2005 Jeep (Rubicon Wrangler)
Previously a 2002 Fleetwood Pace Arrow 37A and a 1995 Safari Trek 2830.