See text for details. Oversize equipment or equipment that blocks warning lamps on the towing vehicle must be lit as shown. See text for details. If either the implement or the towing vehicle are not equipped with turn signals, then turn signals on the implement are not required. However, if both the implement and towing vehicle are equipped with turn signals, they must be in good working condition.
Many older tractors have the turn signal feature.
Tying your implement lights into the seven-pin connector should activate this feature on towed implements. The flashing amber warning lamps on farm implements are shared with the turn signal feature.