I'm having a hard time installing a new head unit into my 2001 Chrysler Sebring 2 door convertible. I'm trying to install a new Alpine head unit: Alpine - 50W x 4 Apple® iPod®/Satellite Radio/HD Radio-Ready Deck, and I have a harness for my car, everything. The unit gets power, but isn't putting out any sound through the speakers. I'm looking for some help here, anything. I can't find a manual for the factory head unit, either, to identify the connections.