CUSTOM DESIGN: The Tekonsha Custom Tow Harness hitch wiring harness kit allows for 7 way trailer functions: taillights, left/right turn signals, brake and reverse lights, electric brakes and 12 volt +. EASY INSTALLATION: Trailer wire harness requires no cutting or splicing. Simply locate your vehicle’s wiring harness connectors, insert the T-One connectors into the vehicle’s harness, mount the modulated converter, and you are ready to go. COMPATIBILITY: Modulated trailer hitch wiring harness module ensures electrical system compatibility between tow vehicle and trailer. Use with 4, 5, and 6 pole adapters to connect to most trailer system. OVERLOAD PROTECTION: This wiring harness for trailers includes short circuit and overload protection on all circuits including reverse. WARRANTY: The Tekonsha Custom Tow Harness Kit comes with a limited 1-year warranty.