My son's 87 Grand Marquis had an Alternator light on solid. He replaced the
alternator twice without affecting the problem. Alternator checks out OK on
the bench. I verified that the system is not charging and checked for
obvious problems: loose connections, continuity from the alternator to the
battery, belt tension, connector to the alternator (replaced), etc.
Nothing. Any suggestions on any other things to check before he drives it
to the shop? Jim