FUNCTIONAL INDICATOR SYSTEMS FOR TRACTOR TRAILER CONNECTION

Provided herein are functional indicator systems for tractor trailer connection having a first connector socket positioned on a tractor and/or a trailer and sized to receive a first connector plug forming a first end of a connector cable, one or more socket function sensors configured to detect a presence or absence of one or more electrical or communications functionalities in a corresponding second connector socket positioned on a tractor or trailer connected to a second connector plug forming a second end of the electrical cable, and an indicator display in electronic communication with the one or more socket function sensors, the indicator display configured to visually indicate the detected presence or absence of the one or more electrical or communications functionalities.