APPARATUS AND METHOD FOR CONTROLLING A TRAILER PARKING BRAKE INDICATOR IN A TRACTOR, AND METHOD FOR MODIFYING A TRACTOR

An apparatus for controlling a trailer parking brake status indicator includes an arrangement for determining whether a trailer is coupled to the tractor, a control system configured to receive a signal that includes at least a determining signal from the determining arrangement that the trailer is not coupled to the tractor, the signal indicating that there is a high level of confidence that the trailer is not coupled to the tractor, and an operator controlled control, the operator controlled control being configured to provide a signal to the control system that the operator controlled control has been operated, wherein the control system is configured to turn off the trailer parking brake status indicator when the control system receives the signal that there is the high level of confidence that the trailer is not coupled to the tractor, and the operator operates the operator controlled control. Methods are also disclosed.