ALSO. . . most car are designed where you cant use the cigarette lighter for those plug in style electronics, they are being setup for cigarette lighters only. You have to use a power outlet if your car has one.
Lots of fords are this way, you cant even begin to fit a cell charger into the outlet , itll only fit in the power outlets. This is to maintain two different circuit loads. the cigarette lighter is usually ran on the same circuit as some interior lighting, the dlc and sometimes even the horn. Too many people would put high amperage items in the lighter socket made for 10-20 amps and blow all the other important stuff. Thats why power outlets are now pretty much all on their own circuit independent of horn, lights and cigarette lighters.
but yea, definetly make sure you have power like the other guys said too but check your power outlets for compatibility not just your cigarette lighter