AMS already solved it, plug a device and did not turn on, when disconnected it took me the entire lighter, exposing the cables, disconnects, I connect them again as they were making sure that the connectors were well held and if it worked perfectly, for the connection of the play and the portatil DVD, I use a converter of 12v to 2 150Watts, with that I have plenty, I put a thief and connect the play, the DVD, and it gives me to put the mobile charger and something else, while it does not exceed the maximum power there will be no problems, I found a converter of those for € 35 I do not know if the price is fine, I do not find the same model online. Thanks for the Kikemec aid