Something to keep in mind the locking nut for the plugs is to big to fit straight into the opening. You have angle it to get it in. That is why I offset the location of locking nut.
Power Points in XL Truck Bed
I added two power points into the rear of my 2024 XL Maverick.
The plugs I bought from Amazon. I used the 12 V cable that came with the truck and bought a second one from the dealer ($30.00 ouch).
The housing I created using AutoCAD Fusion 360 and printed them out...