I would like to hook up a subwoofer amp in the trunk of my 2013 R/T. I have been having trouble finding an amp that turns on via the speaker level inputs. I would like to install the unit myself and do not want to run a wire to the front of the car or into the cabin. I know there is a power outlet in the back of the console that is switched. Does anyone know if there is a switched source of electrical power in the trunk that would be on whenever the car is running or in the account position?