Electronic controllers, sensors, and monitors for agricultural harvesters; vehicle or implement mounted apparatus comprising sensors, computer hardware and software for monitoring and controlling an agricultural harvester head; computer software and hardware for monitoring and troubleshooting the operation of mechanized agricultural harvester and harvester head during harvesting operations; control systems comprising electronic controllers and computer software, for controlling the height with respect to a ground surface of an agricultural tool or implement attached to a moving vehicle; automated steering control system for agricultural harvesters; electronic device for harvester head control