A control system for controlling power distribution in a vehicle equipped with a work device comprising a first parasitic power request module configured to produce an operational value signal indicative of an operational characteristic of a first parasitic device; and a power distribution module configured to effect a distribution of constant net power to the work device, the power distribution module operable to receive the first operational value signal from the first parasitic power request module and to effect a distribution of power to the first parasitic device suitable for the operational characteristic while maintaining constant net power to the work device, wherein the power distribution module is configured to effect an uncontrolled power distribution to the work device when the first operational value signal of the first parasitic device reaches a predetermined level.