Orlen Brown wrote:
Yes these cars have been known to have ground issues. Old age promotes rust everywhere including ground connections. I remember last year when I was putting the Sunbird back together after a head job I forgot to connect the ground wire to a head bolt near the coil. I had all kinds of crazy symptoms that set me back almost a week scratching my head because nothing was related. One of the symptoms was that one of the idiot lights ( it think it was the alt ) would stay lit the minute you connected the battery up and stayed lit even without the key in the ignition! Making the matters worse I had managed to bury that connector underneath the intake and didn't even see it. Only when I looked back at some "before" photos did I remember seeing it there. So I'd bet you are experiencing a similar situation.
Be patient and you will eventually figure this out.