Does anyone know how to get a 2010 Dodge ram radio w/o anti theft to work in a 2012 ram? Am/fm radio up and quit. Im thinking output circut on Original radio shorted out.Old one has anti theft but when I plugged in the 2010 radio it lit up then at first now doesn't do anything. Do I have to get get dealer to program it to work? I'm kinda at a loss here.