trailer brake controller
 

Can anyone tell me how to hook up an aftermarket trailer brake controller in my 2021 F-150 STX?
I checked the e-trailer website and they said there is a connector under the driver side kick panel hear the hood release where the connector is but I don`t see this connector they are talking about. I know there is a connector under the coin holder for a factory controller but it is an expensive item and if I would perfer to use my controller if possible.
Thank you for any help provided.
Mark.