Trying to figure out where the factory installed trailer wiring is. Going to put a Class II hitch on my SES and trying to figure out if a 4 wire cable and plug are available. And where they are hidden in the car. There are "access panels" in the cargo area, but I've yet to investigate them. Quick look underneath was not productive, and my Ford Dealer's parts department was clueless - tho they did say they will be researching the issue.