the battery is in the trunk on the left side
If you are talking about a 1984-1987 Ford Escort diesel in the USA, it is located behind the left side trim panel in the trunk/hatch area.
I have an old 1987 Ford Escort Diesel 4 door hatchback. I need two find the two glow plug relays for it and am looking. Regarding the question about the battery, it is located in the back of the car behind a panel in one of interior quarter panels. There should be a removable panel that you can see, the battery is located behind the panel.
BCI group size ( 58 ) according to fordparts.com
it is located between the rear fenders
Bottom of engine block located inside the oil pan.
How do you change out the clutch on 1987 Ford Escort Gl
Under the hood, behind the battery.
Behind the battery
The starter is located near the bottom front of the engine. You can follow the positive battery cable, from the battery directly to the starter.
in the oil pan at the front driven off the crankshaft.
I believe on this model it is a large cylindrical object which is a silver color located near the back of the engine it has a hose on the top and one on the bottom that is clipped to it.
They are not interchangable. The 87 is a 1st generation Escort and the 92 is a 2nd generation Escort.