Plug N Play means no cutting of the factory harness, Just un-plug the connector near the rear of the car and plug our adapter in. It installs in minutes. The harness is 4′ long and includes 3 cable ties. This adapter also includes power out for Optional License Plate Light or whip light. Note:it is a 3 Pin to 4 Pin Flat, as such it is unable to do turn signals. If used with our Turn Signal System it will not indicate direction, only Running and Brake light.