I found an issue with this step:
I don't know what year your truck is, but mine is a 2017. In 2017, this connector now only has 6 pins, and the layout is different. It obviously changed at some point.
I also have a different part number for the outlet. 56046934AA - the parts site says 2014 to 2019
68159295AB - says 2013 to 2016
Where it gets really weird though, is that if I look up 2016MY DS or DJ, it shows the 8 pin connector and layout for the IP outlet. For the plug in the inverter, things appear to be the same. I'm guessing the outlet for 2017 trucks goes back to 2014 in a different program, maybe WD/WK or KL. The 6 pin connector appears to be in DS and DJ etc for 2017
The kick panel connectors are different between 1500 and 2500/3500. The connectors for the inverter appear to all be the same. The connector for the outlets appear to be the same, but change at 17MY
"FCA = friggin' connector anarchy"