The Chrysler K-Car Club

Hello everybody. I need help either repairing or finding a 1984 Chrysler Lebaron Quartz Lock (Premium audio system) radio. The one in my car right now will drain the battery when the car is off (It thinks it's playing a tape or something, yet the deck does not work) and the radio will cut out all the time (bad solder joints?). Thanks for your help, I really want to keep this car original. Also for anyone wondering about my last post, I do know I need to remove the steering wheel now and I know how to do so (And I put in new sparks and wires. The old wires were ORIGINAL!)