The firewall is located between the passenger compartment and the engine bay.
The 1987 Ford Crown Victoria fuel pump relay switch can be found on the firewall in the engine compartment. The relay switch will be on the drivers side of the firewall.
Look by the steering column at the firewall
The 1998 Ford Crown Victoria windshield wiper relay switch can be found on the firewall in the engine compartment. The windshield wiper relay switch will be on the passenger side of the firewall.
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Crown Victoria
On a Ford Crown Victoria : firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle
The firewall as they call it, is the metal that separates the engine and the driving compartment. Also known as the Bulkhead, or Forward Bulkhead
On a 1999 Ford Crown Victoria : firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle ( if that is what you mean )
Try by the driver's side firewall by the lower end of the steering column
I'm not a mechanic / technician but I know the engine cylinders are numbered : firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of 2001 Ford Crown Victoria so I ASSUME it would be : firewall D - H C - G B - F A - E front of 2001 Ford Crown Victoria
The Coil On Plug ignition system uses ( 8 ) individual coils on the 8 spark plugs on your 2002 Ford Crown Victoria firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Crown Victoria
firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of Ford Crown Victoria ( V8 )
Near the firewall , towards the passenger side of the engine