Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think) | etrailer.com
Amazon.com: Nilight Heavy Duty 7 Way Inline Trailer Plug with 7 Gang Junction Box - 8 Feet, Trailer Connector Cable Wiring Harness with Weatherproof Junction Box Suitable for RV Automotives Cars,2 Years Warranty : Automotive