What you want is an inverter. Harbor Freight has a 2000 watt unit for about 200 dollars. This would be about minimum size to run a motor. It come with cables the size of jumper cables. Anything you could plug in a cigarette lighter wouldn't be heavy enough. Dickm :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: -- Visit www.honeybeeworld.com/BEE-L for rules, FAQ and other info --- ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::