Hopkins Manufacturing Corporation makes your towing experience simpler and more rewarding through innovation and value. Hopkins offers a variety of towing solutions including vehicle wiring kits, adapters, vehicle and trailer connectors, breakaway systems and much more. Today, more than 40 percentage of retail category sales are generated from Hopkins innovations. The LED Test 7 Blade Molded Cable is prewired and provides protection to the wires with the jacketed wire sleeving. The LED lights confirm electrical continuity exists for each tow function. 7 Blade connectors are the most common vehicle side connectors and are typically used with large trailers.