Another newbie question or two: Does anyone know how to circumvent the 20 minute cut-off for the original equipment radio in a 2009 Peugeot Boxer? I can adjust the time, but only to a maximum of 20 minutes without restarting the engine. I presume that having the radio on for an hour or so is unlikely to drain the vehicle battery too much. I have also found what I think are speaker wires inside the front upper lockers of my Explorer Group 115, near the front downlighters. I wonder what the other end is connected to, if anything - maybe the existing radio?