Tekonsha 118373 T-One Connector Assembly with Low-Side Switching Converter T-One Tow Harness Connectors require no splicing of vehicle wires, just locate your vehicle's wiring harness connector, unplug the connection and insert the T-One Connector into the vehicle's harness Weatherproof, one-piece construction and a 'Factory' appearance - T-One Connectors look like part of the factory harness and simply store in the cargo area or under the rear bumper when not in use 16 gauge bonded wire with 4-flat plug and cap; 2.1 amp stop light/turn signal circuit capacity; 4.2 amp taillight circuit capacity; low-side switching converter Simple, easy to follow, do-it-yourself instructions included in every package; no special tools required for installation Backed by Tekonsha's 1 year limited warranty