Shop Nilight 7 Pin Trailer Plug Detachable 7 Way Round RV-Style with IP68 Waterproof Seal Heavy Duty 7 Pole Trailer Side Connector Replacement Plug for Traditional 7-Way Trailer Sockets in high quality, support 2 Years Warranty. Plugging in your trailer wiring and trailer lights is easy with the ergonomic design of this 7 pin electrical plug. 7 way female trailer plug features 2 handle hooks on either side of the plug for a better grip when plugging in or unplugging trailer wiring.