Abstract: A direct-connect trailer tow interconnector for connecting the electrical circuits of a tow vehicle with similar circuits of a trailer in which a one-piece shell socket accepts a standard trailer plug at one end and is compatible with the fitting of a tow vehicle harness at the other end. Pass-through conductors, each of which is made from a single metal blank, form terminals compatible with those of the trailer plug and also with those of the vehicle harness fitting. A cover is provided with a spring-loaded floating hinge to permit flat sealing protecting the interconnector from environmental hazards, and a flushing passage is formed through the cover to remove debris from the floating hinge.