While I had the old girl fired up today I had a volt meter on the battery. It never showed anything over battery voltage. Not that I ran it very long. I followed the diagnostic flow chart for charging system diagnosis. Looks to be the regulator/rectifier. As I am trying to keep the costs down until I know it will live I would like to avoid spending over a hundred bucks on a new OE part. So the question is, will the '88 and newer part fit the earlier setup?