My 2015 Montana has always been a pain in the you know what to get the Trailer 7-Way Plug into the Truck socket. I tried dry silicon, sandpaper two make the trailer plug a little less big, etc. I two hands pushing and wiggling it around to finally get it in far enough for the door to lock it in place.
Saw this EZ Connector in Trailer Life, and sound like what I needed. The truck side took 5 minutes to install and the trailer side was around 30-35 minutes. Please click the short 1:07 video showing it in action. I had phone in one hand and connected and un-connected the trailer with my other hand.
The following is what I ordered. The first item converts EZ Connector to Standard 7-Way Plug, in case I need some to tow my 5th Wheel. My Truck has another 7-Way plug down by trailer hitch if I need to pull someone else.