Hopkins Manufacturing Corporation makes your towing experience simpler and more rewarding through innovation and value. As an Endurance product by Hopkins, this product is designed for ultimate durability against harsh weather conditions, corrosion, and normal wear and tear. Not all trailer couplers and vehicle hitches are the same height. Because of this, some vehicles require extra length on the trailer wiring to plug into the tow vehicle and provide enough slack for turning radius. Hopkins' Endurance Flex-Coil HD Adapter provides this extra reach while ensuring that the heavy duty wire will not drag due to the design. Nite Glow connectors illuminate upon activation of the taillight function to verify electrical continuity between the vehicle and the trailer. This adapter is designed for easy installation and to withstand all weather conditions.