1995 BMW 318 wont start. No sark or fuel

Tried all relays, with a donar vehicle

Fuel pump does not prime. Fuel pump relay will not energize when ignition turned on or engine turned over. But I can energize it with a power probe and get the fuel pump to run.
When ignition switched on and relay unplugged red and white wire live, green and violet to the pump negative. Brown and green to ecu no feed and green to earth. When relay connected all wiring stays the same but a live feed down the brown and green wire now accurs. And relay does not energize. Its as if the relay has a short but tried several relays. Many thanks for your help

There is no signal from ecu to fuel pump relay.
My understanding of this, is that when ignition switched on the fuel pump primes and stops then when a signal is recieved from the cranckshaft sensor
to say the engine is turning the ecu sends a signal for the pump to run, the injectors to inject and spark plugs to fire.
With this in mind I tested resistance of shielding on the cranck sensor to earth it was ok, but when I checked the centre signal wire to shieldig wire it came back 47 ohms resistance. Insted of zero as the other signal wire shows. Is this normal or is there a short to earth in this signal wire? And this is why I am not getting a signal to ecu?

Sorry didnt meen to say no resistance with signal wire
ment to say one is 47 ohms and one has full resistance no circuit