The RV7 Pro Plug 7-way connector is the only surface mountable connector system that eliminates the need for cutting a 2" mounting hole, a 4" mounting depth, and includes the additional features of self testing, easy serviceability, inherent corrosion resistance, and simple wiring connection access. This trailer and RV electrical connector system for 12 Volt systems and upgrades new installations as well as connector repairs and replacements. The connector system can be installed rapidly and in most cases without drilling holes in the vehicle’s mounting surface. High quality wire terminals are easily accessed for initial installation or service and connecting to them can be performed after the connector system has been mounted to the vehicle by simply removing a cover. Light Emitting Diodes (LEDs), are incorporated into the connector system to provide visual indication of the electrical signals from the towing vehicle. See how versatile Pro Plug is by clicking on "Common Applications" on the "INSTALLATION" page. New optional mounting bracket systems are available to work for more connector installations. Check them out on "OPTIONS" page. Pro Plug is made in USA. Patent No. 7,491,065