US Patent 9987892 Trailer safety chain attachment monitoring system

A vehicle includes a controller and a frame having a receiver including an electrical connector configured to connect to a trailer having a plurality of chains. The plurality of chains each includes a sensor configured to transmit a position of the chain relative to a winch disposed on the trailer. The controller is configured to, in response to data from the sensors indicating a position of the chains, display via an interface a connection status of the chains.