PN#57003 SKU#4008 7 Way RV Blade LED Electrical Adapter (Not a Wiring Extension). Enables vehicles with a 7-way RV blade socket to recognize LED trailer lights. Built-in, integrated resistors for computers that don’t recognize LED lights. 7-way connects tail, brake, reverse, turn signals, brakes and auxiliary power. Simple plug-and-play design eliminates the need for cutting or splicing. Spring-loaded dust cover keeps connector clean when not in use.