Does anyone know how to get the lighter plugs and/or USB connector to stay on after you remove the ignition key (2011 Sonata GLS)? I would like to charge my Garmin GPS and/or IPod while car is in ly carport at night but it won't work because the power source goes off with the key (not like my old Saturn that I traded in!). There should be a way to connect the lighter plugs direct instead of through the ignition switch!