PN#57271  SKU#4546  5′ Electrical Adapter Harness (7 Way RV Blade Vehicle To 4 Way Flat Trailer.  Adapts 7-way RV blade vehicle socket to fit 4-way flat trailer plugs. UV-resistant coiled cable extends up to 5′ without scraping the ground. Simple plug-and-play design eliminates the need for cutting or splicing. 4-way flat output connects tail lights, brake lights and turn signals. Durable molded plastic housing resists corrosion.