This is a 9-pin wire harness that can be used on a Kubota RTV and B2650 tractors. Compatible with other tractors requiring a 9 pin square connector. Please check the harness in your tractor to ensure it mates with the connector you are purchasing. This connector is the female end. The tractor should have a 9-pin male end containing 7 visible pins. This connector allows you to install any single din aftermarket car stereo without having to cut off the tractor connector and make hard connections. This harness is wired to the stereo harness, also called a pigtail, according to the matching tractor wires making the radio plug and play. Detailed instructions included.