Abstract: An automotive vehicle electrical circuit that, when the hazard warning switch is in the on position, provides for the front lamps on both sides of the vehicle to continue to flash on and off when the stop lamp switch is actuated to continuously illuminate the rear lamps on both sides of the vehicle. The invention enables a pre-existing lamp control circuit to be cost-efficiently adapted to this form of control with only relatively minor modifications, namely the addition of two diodes and a minor change to the pre-existing turn signal switch. The invention may also be used to advantage in the production of new vehicles.

Abstract: The system is provided for actively controlling the pitching of a truck cab. The system includes sensors and a single point hydraulic actuator mounted at the rear of the cab between the cab and the frame on which the cab is mounted which is computer controlled and activated in accordance with calculations provided by an algorithm programmed into the controller in response to cab or frame pitch acceleration signals received from the sensors. A feedback circuit is also provided which verifies activation of the actuator in accordance with the calculations provided by the algorithm being run in the controller.