I did not install a kit, that's not what I said. I ordered my truck with XFQ = your "prep kit."
The prep kit (XFQ aka 82215833AB) has to be installed and enabled. This is just the truck part.
Antenna connector? Now I'm confused.
To recode (not really flashing) your truck BCM (Body Control Module) to support DIY installed sales options, you need software (AlfaOBD @$50), a supported OBDII reader ($20-$100), and a security bypass cable ($50) to get around the security gateway that otherwise prevents writing those changes to the BCM. For a 2019, you have to use the WINDOWS version of AlfaOBD to enable a 2020 code (long story).
There are two components to the trailer camera setup. XFQ is the factory sales code for the "prep kit" that is wired in the truck - bumper to radio (2020 factory FXQ also has it in the bed).
There is then an external kit with the 12-pin plug/wiring harnesses and a camera for the trailer. The RAM camera sucks. People have been trying to figure out a source for the 12-pin bumper PLUG/cable to use with a camera of their choosing. It's a semi custom setup.
The Ford 12-pin plug is the same (same OEM) as RAM, just wired a bit different because their TTPMS receiver goes in the trailer (ours is behind the bumper) but can be modified. I threw
@Phil T under the bus because he's done it using his own camera and trailer extension cables. The link I sent was to Nichols website, not intended to point to one specific cable.
Nothing except OEM is plug and play. I stated Phil made a custom setup using a plug/cable harness from Nichols. the EXTERNAL cable truck to trailer.
He wasn't asking you, he was asking Phil and you're just conflating the whole thread.
This is like the worst game of telephone ever (this week).