Mine in my 1983 Eldorado Are located inside the fenders on both size. On The ender side o the battery there should be a hole in it that 2 of thehorns should be. the other 2 are o n the opposite side of the engine bay
The headlight fuse for a 1984 Cadillac Eldorado is in the fuse box under the hood. It is in the number 17 slot.
The fuel pump in the older eldos is located inside the gas tank. once you drop the tank its pretty straightforward from there.
Cadillac does not use inertia switches.
If it is carburated (?) maybe in the inlet line of the Carb.
if it is using trnasmission fluid you could have a bad tansmission modulator. take it to a shop
its located on the passenger side underneath the car on the back side of the engine above the exhaust pipe
they are fuel injected, there is a filter located on the frame rail on the passenger side . it is under a slight amount of pressure. it would be wise to have a rag around the fitting as you loosen it.
Replace hoses and fittings
The fusebox on my 1984 trans am is located under the dashboard on the drivers side, just behind the lever to pop the hood.
It is located under the drivers side rear door.
The ignition module is located in the distributor under the rotor, it plugs in.
An engine that is compatible with the 1984 Cadillac 4.1 is the Olds 307. Another possibility is the Vortex 350.