My 1993 bmw 325i has no spark no fuel and have already replaced the crankshaft sensor,fuel pump, fuel relay and dme relay and still the same thing.it just turns over, could the fuse link cause these symptoms even if all of my dash lights and everything are working

ground will come from DME but with authorization from CAS. You may just have to do a DME CAS sync. Your problem will be solved easily. If you have FVDI, DELPHI, AUTEL , INPA, SNAP on SOLUS and many other tools. its a simple job

https://blog.bavauto.com/5677/bmw-e46-3-series-engine-electronics-fuse-pack-in-underhood-e-box/

Fuse 1 - 30A - DME, Injectors, SMG Hydraulic unit
Fuse 2 - 30A - DME, Idle control valve, Fuel tank ventilation valve, Fuel pump
Fuse 3 - 20A - E-box fan, Transmission RPM sensor, Camshaft positioning sensors, Mass airflow sensor, Fuel pump relay, Secondary air pump relay, A/C Compressor relay, Fuel tank leakage diagnostic module, SMG selector lever
Fuse 4 - 30A - Oxygen sensors and oxygen sensor heater circuits.
Fuse 5 - 30A - Fuel injector relay.

Have you checked the spark and injector pulse

The Bentley Manual shows the fuel pump relay in the box on the passenger side of the car under the hood. Looking toward the drivers side the pump relay is the second on from the passenger side. It is fuse #23. Looking at the bottom of the relay the pins clock wise from 12 o'clock are 30-87-85-86. The third one from the passenger side is the main relay. It is usually white. "The main relay is energized via the DME engine control module and supplies power to many of the DME components and subsystems, including the fuel pump relay. If this relay is faulty, the engine will not start."

Try to disarm the alarm system first,if that doesn't work,try your spare key,if it works the key is faulty.if this fails,put it on diagnostic machine.,since it can be EWS.

change the fuel pump relay it could be any one of the pins

no spark check elec

run a fused wire from the positive side of your fuel pump to your "on" side of your ignition switch bypassing the alarm kill switch and, allowing you to drive the car

Are you getting the proper voltage to the pump?check ALL of the fuses & definately the relay.