Requires no wire splicing – simply locate your vehicle’s wiring harness connectors, insert the T-One connectors into the vehicle’s harness, mount the ModuLite converter and you are ready to go. ModuLite module ensures electrical system compatibility between tow vehicle and trailer; included brake controller adapter harness provides a quick, easy plug-in connection to your brake controller. Allows for 7-way trailer functions; taillights, left/right turn signals, Brake and reverse lights, electric brakes and 12 volt +; use with 4, 5, and 6 pole adapters to connect to most trailer system. Simple, easy to follow, do-it-yourself instructions, with photos, included in every package.