2 days ago someone stole my stock NAV/radio out of my 2006 300C. That unit did not have an AUX jack. Does anyone know if the existing wiring will support a stock unit that does have an AUX jack? I have reviewed my owners manual and contacted my local dealership. The dealership service department said it "should" work fine. I would prefer not to buy from the dealership but I don't want to buy something only to find out it's not compatible...and then not be able to return it.