In my 83 cadillac sedan deville it up by the break petal next to the firewall.
This is typicall attached to the inside cover of the fuse box
Fuse box in a 95 deville is in the trunk on dricers side Drivers side in the trunk and the same side in the engine compartment.
under the back seat
You can find several relay switches on your 1990 Cadillac Sedan Deville. Most relay switches will be in the fuse box. The relay switches will be in the third column of the fuse box.
The PCM in a 1993 Deville gets power from the IGN fuse. the fuse is located in the distribution box under the hood.
In the trunk, remove the back panel by unscrewing the four plastic knobs on the roof of the trunk, there is the entire fuse box for the vehicle
under left side dashboard
The 1995 Cadillac Deville sunroof fuse is located in the fuse box. The sunroof fuse will be one of the four auxiliary fuses at the bottom of the second column.
There are fuses boxes under the hood and in the trunk on the drivers side on a 95 Deville
This Cadillac has one fuse box under the rear seat and one in the engine compartment next to the powersteering fill tank. Consult your owners manual for specific fuse locations.
Under the back seat. Pull the bench seat up. You will feel the clamps releasing it. The fuse box is now visible to the left of the center.