The (2007-2013) Chevrolet Silverado / GMC Sierra - (2014) Silverado / Sierra HD - OEM Harness provides an easy and convenient way to connect our cameras to the built-in radio/display in your pickup truck. Avoid the lengthy time it takes to run cabling through your truck, use your truck's built-in wiring system instead. This OEM harness comes with a 6" 4 Pin Female to 5 Pin Female adapter for an easy and hassle-free connection to our cameras. ***Are you a fleet/outfitter? Please call us before purchasing to verify connection.***Please Note: In order to use this harness you must be replacing an existing OEM camera or have a camera ready vehicle. ***Note: Before installing the camera - make sure the monitor is flashed to read the cameras.