Abstract: A control system for a central lubrication system with an electrically operated lubrication pump for vehicles without their own power source, such as trailers, carriers for utility vehicle, etc., includes an electrical time-controlling device to activate the lubrication pump as a function of the operating time of the vehicle. Power is supplied to the time-controller device and the drive motor for the lubrication pump via the feed lines for the brake light. The time-controlling device has a sensor which detects motion of the vehicle or parts of the vehicle and generates a signal for a second timer during such motion.