Did you read any of the following posts? One member posted pics or the 2021 new jumper location in the cab and the blunt wires under the hood. Post #43, post #48.
The AUX connectors are on one 4-pin light grey and one 4-pin dark grey under the hood attached to the AUX PDC.
There's a grey jumper up by the firewall almost directly behind the headlight switch.
Anyone done a dash camera install yet? Looking for the switched power to tap into. I'm thinking i'll find some in the mirror or under that massive cover on the windshield. Any tips taking that thing off so I don't snap any plastic clips?
hdrams.com
There are two jumpers that come in the upfitter bag of wires that you have to plug in. They only fit the mating connecter.