Gator GTK1 4 Pin PROLINK Trailer Connection Kit is a caravan/trailer pro quick disconnect kit which suits Gator PROLINK II reverse camera kits and many other 4 Pin professional systems. The kit includes heavy duty sockets for the vehicle and trailer that features metal mounting brackets and weatherproof covers to protect the sockets from dust and water when not in use. This kit features an additional feature of a trigger cable running through the curly cord, which allows you to trigger the camera automatically when the trailer kit is connected.