* Under the dash: This is a common location for many vehicles, often near the fuse box.
* In the fuse box: Some models integrate the flasher directly into the fuse box itself. This means it's not a separate replaceable unit but a component within the fuse box assembly.
* Behind the instrument panel: Less common, but possible.
To find it, you'll need to:
1. Consult your owner's manual: This is the best place to start. The manual will have a fuse box diagram showing the location of the flasher relay (if it's a separate unit) or it might state that it's integrated into the fuse box.
2. Check online forums: Search for "[your Buick Regal year] turn signal flasher location" on forums dedicated to Buick vehicles or car repair. Other owners may have already documented their location.
3. Look in the fuse box: Carefully inspect the fuse box. Many relays are similarly sized, so identifying the turn signal flasher may require checking online diagrams based on your specific year and model.
Without knowing the specific year and model of your Buick Regal, a precise location cannot be given.