MM2-
Welcome to winnieowners!
Re: Dash end of trailer electric brake connector. In addition to the helpful link "Eagle5" provided, see page 33 of the Ford 2019 E-series Body Builders Layout Book (link
here). There is lots of helpful wiring information in that section of the BBLB. A link to Ford's BBAS (Body Builder Advisory Service) publications is
here.
You should add a signature to your user profile. It usually includes the year, make and model of your coach, but can include other information. A signature is appended to each post. To create/edit a signature, click on the "User CP" link in the orange bar at the top, then click on "Edit Signature."