1993 Cadillac DeVille Owner's Manual - Page 344

Interior Relay Center Access You'll find the interior relay center under the right side of the instrument panel.To gain access, remove two screwsfrom the I 4 Mmi Fuses I To gain access to the maxi fuses, remove the cover located in the engine compartment. If a maxi fuse should blow, have your vehicle serviced by your Cadillac dealer immediately. There are extrafuses located in the maxi fuse block.