To find it, you'll need to:
1. Consult your owner's manual: This is the most reliable source. The manual will show the exact location(s) and a fuse diagram.
2. Check under the hood: Many Cadillacs of that era had a fuse box under the hood, often near the battery or on the inner fender.
3. Look in the glove compartment or under the dash: Some fuse boxes or supplemental fuse panels might be located inside the car.
4. Check online resources: Search for "[your Cadillac model] 1984 fuse box location" on the internet. Sites like forums dedicated to classic Cadillacs, repair manuals sites, or YouTube videos might show the location.
Without knowing the exact model of your 1984 Cadillac, it's impossible to give a precise answer. Start with your owner's manual – it's the best place to begin.