Depends on which relay you are looking for, there are many. Re-post question with more info.
The 1994 Oldsmobile Cutlass turn signal relay switch can be found below the dashboard. The relay switch will be on the drivers side of the passenger compartment.
The 1991 Oldsmobile Cutlass cooling fan relay switch can be found attached to the right side of the radiator housing. The cooling fan relay switch should be labeled as such.
The 1995 Oldsmobile Cutlass horn relay switch can be found on the firewall in the engine compartment. The horn relay switch will be on the drivers side of the firewall.
The Oldsmobile Cutlass fuel pump shutoff can be found on the firewall in the engine compartment. The fuel pump shutoff will be in the middle of the firewall.
The 1997 Oldsmobile starter relay switch can be found in the fuse box. The starter relay switch will be at the top of the third column.
The 1997 Oldsmobile Cutlass radiator fan switch can be found in the fuse box. The radiator fan switch will be in the third column, second from the bottom.
The 1992 Oldsmobile Cutlass power window wiring diagram can be found in most service manuals. The wiring diagram can be obtained from most General Motors dealerships.
The Oldsmobile Cutlass supreme refrigerant port can be found on the air conditioner compressor. The refrigerant port will be labeled as the low pressure port.
Found mine in the wire tray right between the driver seat and the driver door. Had to remove the cover for the hood release in order to lift up the carpet enough.
A free wiring diagram can be found in the maintenance manual of the 1993 Oldsmobile Cutlass. It may also be obtained through an auto part store, some will give a person a print off of a diagram.
I found it in my repair manual. It is about 26 to 32 psi.
The 1996 Oldsmobile Cutlass Supreme temperature sending unit can be found on the front of the engine. The temperature sending unit will be a few inches above the thermostat housing.