A motor assembly includes a keyed on-off switch and at least one 12-volt battery coupled to the existing DC electrical system of the vehicle. A D.C. speed control unit regulates the current to a DC drive motor. A housing is positionable adjacent to a front or rear portion of the vehicle and includes a D.C. motor connected to the DC speed control unit and a 12-volt D.C. alternator. An A.C. generator is operably connected to at least one AC breaker box via the electrical system. A converter is electrically coupled to the existing electrical system and the A.C. breaker box. The system further includes a plurality of electrical outlets and a power switch operably connected thereto and to the A.C. breaker box wherein the outlets conveniently allow a user to supply power to an external device.