Well I went through the entire interior and unplugged and replugged most of the electrical connections. It wasn't the radio but it was something else. It is no longer happening but I do get an audible click from the door courtesy lighting system which is kind of flaky to begin with. So I think either it was a corroded plug somewhere or it is the interior lighting and it just hasn't happened again yet. Now to adjust the valves and change the oil and then this 85 300CD is being sold.
Thanks Again