Autozone.com has a lot of diagrams for specific vehicles.
what's the pis of the 1990 v6 isuzu pickup fuel pump
You must remove the fuel tank , the fuel pump is located inside the tank.
look back by the fuel tank by the frame on the passengers side
It is in the fuel tank if it is fuel injected.
bottom left is the inlet, bottom right is the return, top goes to the engine, bottom is the breather
typically 14 gallons for 2.3 liter
were is the relay for 4x4 fuel pump 1992
It is inside of the fuel tank.
along driver side frame rail by drivers door
It is inside the passenger side rear wheel well.
On the frame ny the tank follow the line can't miss it