Extend your current 4 flat connector by 12 inches with this 4 flat harness extension. Many tow vehicle connectors are mounted in the bumper of the vehicle. Extra connector length is needed on the trailer wiring to plug in and provide enough slack for sufficient trailer turning radius. Product Features:Extends wiring system for more flexibility12 lengthMost Commonly Used Trailer ConnectorFound On Small Boat/UtilityCorrosion Resistant TerminalsPrinted wire functions for easy wire referenceMeets SAE standards