To find it, you'll need to:
1. Consult your owner's manual: This is the best resource. It will have a diagram showing the location of all relays and fuses.
2. Check the fuse box diagrams: Usually located inside the car (often under the dashboard or in the glove compartment), there's usually a cover with a diagram showing what each fuse and relay controls. Look for a relay labeled "fuel pump," "electric fuel pump," or something similar. The diagram will show its location in the box.
3. Use a Haynes or Chilton repair manual: These manuals provide detailed diagrams and instructions specific to your Cadillac model.
4. Search online forums: Search online forums dedicated to 1993 Cadillacs. Users often post pictures and descriptions of the relay locations for their specific model. Be sure to specify your exact Cadillac model when searching.
Without knowing the specific Cadillac model, providing a precise location is impossible.