Assuming a 100w, 12v bulb, that Q-beam is probably drawing over 8 amps. I see those 15a (15 ft.?) coiled extension cords at the big box stores ocassionally. I have used one for the power cord on an old drill, and modded another to allow running a 12v drill from a car battery or gell cell. A lot of cable/wire manufacturers probably offer these for various 120v or other ac applications. -RussH