Trailer End. This Connector is used on most RV travel trailers. The heavy-duty plating is for maximum weather and corrosion resistance. This connector features a stainless steel cover spring and a unique safety latch that prevents damage from accidental pull-away. It has the latest design, self-wiping pressure contacts and vinyl insert to keep out dirt. It is interchangeable with other 7-way RV connectors. 12 volts, 30 amps.