The CURT MultiPro/Multi-Flex Tailgate Sensor is designed to help prevent costly and unnecessary damage to GMC Sierra and Chevrolet Silverado tailgates. The solution requires no wire cutting or splicing on the truck. Instead, it uses a factory-style wiring harness to plug into OEM sockets. Once installed, it prevents the inner tailgate panel from dropping down while a ball mount or other towing accessory is installed in the receiver. It allows for full use of the truck’s cargo and towing capabilities without risking an expensive repair. The sensor can be used with virtually any ball mount that fits the receiver tube. It also functions as a hitch cap to protect the receiver when not in use.