An embodiment of the present invention is a reconfigurable cargo door/tailgate position indicator assembly adapted to indicate a position of a cargo door/tailgate including a processor configured to receive input from a door/gate monitoring mode input device, receive input from a door/gate position input device, analyze the input from the door/gate monitoring mode input device, analyze the input from the door/gate position input device, and output a signal to a door/gate position indicator to control the door/gate position indicator based on the analysis of the input from the door/gate monitoring mode input device and the input from the door/gate position input device. In another embodiment of the present invention, there is a reconfigurable security device configured to selectively take into account the position of a cargo door/tailgate to determine whether a vehicle's security has been breached.