I am a RV newbie who asks newbie type questions. We purchased a T@B 320S from Nucamp. It has an Autowbrake electric brake controller and a 7 pin trailer connection. Our tow vehicle is a Subaru Outback 2015 with a 4 pin connection. The T@B dealer supplied us with a 7-to-4 pin adapter. All appears to be properly wired (all the trailer lights work) but I cannot tell whether I have trailer brakes when towing. Question - assuming everything is set up correctly, do i have trailer brakes?