Here you go:
www.vwidtalk.com

trailer connection
do the ID.4 FE/AWD versions destined for the USA have a 13-pin Euro style trailer connection? why wouldn't the US versions have a standard 7-pin/4-pin connector to use with both trailers that have brakes and those that don't (like U-haul trailers)? not seeing any 13-pin to US 7-pin adapters...