My signals lights won't work on my 1991 Buick Regal. I changed the fuse and thats not the problem. I need to know where the flashers are on a 1991 Buick Regal; 4 doors, 3.8.

The flashers and the signal lights are two entirely different items.

If your blinkers are not working, change the bulb(s), if you turn on the flashers and they don't work then the flasher module needs to be changed which is usually found on the fuse box next to your left foot under the dash.

This will usually either look like a square block or a cylindrical plastic tube. If you turn on the flashers and go down there and don't here it ticking or feel it ticking with your finger on the plastic housing, chances are it is shot, just pull it out go to your local auto store and get another, plug it in and you're done.