However, it's *most likely* located either:
* In the underhood fuse box: This is the most common location for relays in many vehicles. The fuse box is usually under the hood, often near the battery. The diagram on the inside of the fuse box cover should show the relay's location. Look for a diagram showing relays and try to identify one labeled "blower" or something similar.
* In the interior fuse panel: Some vehicles place some relays inside the cabin, often under the dashboard. Check the fuse panel inside the car (usually in the glovebox or under the steering column). Again, consult the diagram on the fuse panel cover.
To find it definitively:
1. Consult a Repair Manual: A Haynes or Chilton repair manual specific to your 1997 Cadillac STS will show you exactly where the blower motor relay is located and will have diagrams of the fuse boxes.
2. Use a Wiring Diagram: You can often find wiring diagrams online (though finding one specifically for the relay can be tricky). These diagrams will show the relay's position within the electrical system, helping you trace it.
3. Online Forums: Search Cadillac forums (like Cadillac Owners or similar) for discussions about the blower motor relay location on a 1997 STS. Someone might have already posted about it with pictures.
Remember to always disconnect the negative battery terminal before working with any electrical components in your vehicle. This will prevent accidental shorts or damage.
