could be alternator or charging circuit or could be anything got to do with the battery when its draining out loose connection terminal
dome light stays on ford taurus
Ford Taurus
I'm not sure about all of these, but I have a 98 Taurus and the battery light came on. After a few days, the car died altogether and I had to replace my alternator. I would definitely take the battery indicator seriously and have your alternator checked.
Battery light usually means alternator not charging. Most common solutions would be be a bad alternator, bad connection, or loose alternator belt. If the battery and alt test ok than check the connections to the alternator and battery. The alternator should have 2 connections.
Remove negative battery terminal for 10 mins.
The sensor in the door is dirty - where the door latches. You can spray WD-40 into that area to clean it. This happened to me in a 1997 Ford Taurus.
I just sprayed all my 1999 taurus door latches with silicon and it fixed it.
36R
12v
Check the dome light. These cars are notorous for having a bad door switch.
Assuming battery not defective (you can disconnect it from auto overnite to check) you probably got a light that stays on somewhere. Trunk light?
Problem with the electrical system. More than likely alternator is bad.