Tekonsha 118255 4-Flat Tow Harness Wiring Package with Circuit Protected ModuLite Module Vehicle specific replacement trailer wiring harness for vehicles originally equipped with a factory installed tow package - perfect for replacing damaged or missing factory harnesses Quick and easy plug-in installation - no cutting or splicing necessary; simply plug into the existing vehicle connector, insert the provided fuse and you are ready to start towing Circuit protected ModuLite module ensures electrical system compatibility between tow vehicle and trailer, and protects the tow vehicle from harmful electrical shorts or incorrect wire connections Included 4-wire flat connector is compatible with 5, 6 and 7 pole adapters (not included) to fit just about any trailer system Installs quickly and easily; instructions are easy to follow and include detailed photos; backed by Tekonsha's 1 Year Limited Warranty