Canyonlight Dan, I can honestly say that taught me several lessons. Even then, as it was my 1st 5er and only the 2nd time hooking up myself (dealer did the fist one and I hitched one other time) I did and still do a visual on the jaw to see that its wrapped around the pin, I looked and still look at the handle, and do a TUG test using the trailer brakes and chocks.

I did all of the above on the hookup in question, but did not realize that the handle was not all the way in, yes there were 2 bangs not just the click, and being dark did not help in identifying with a flashlight that the wedge was not behind the plate.

I had several issues with the hitch even after that and even after going through the manual still found that adding lube in places not mentioned helped. Selling dealer (before the GD) was not really a help on instructing me how to use the hitch especially since they were locking the doors as we were getting in the truck in the parking lot.

I have since started using dry Graphite spray on the way tubes (I hate WD40 because its not a lube) and now the plate is graphite painted. Grease worked for helping with alignment as I found if you were not perfect it would bind the rotating jaw and it would not move. I made probably 4-6 attempts 1 day to get the jaws to latch. Each time the KP would trip the lever (heard it) but the jaw never moved. That's when I started greasing the KP to allow for the jaw to slide around. No more issues after that with either hooking or unhooking.

Click and bang, we’ll remember that.