Fuel Pump

It quit running, I couldn't hear the fuel pump running so I so I checked the fuel pressure. It was zero. I checked the relay which was good, I pulled the old pump and checked it. It proved to be bad. I put a new pump in it, but still no fuel pressure. I jumped the fuse/relay box wire going to the fuel pump and the pump ran. I cant get a signal from the ecu to the relay telling it to send power to the pump. I put a second ecu in but still no signal to the relay, so I put the original ecu back in it. And, I can see this problem has apparently happened before. Someone skinned back some of the insulation on the wires that send power through the relay to the pump. I thought maybe it is a theft deterrence issue so I disconnected the battery cables and held them together for a little over one minute. Still nothing. Tried to read the error codes, but the reader kept getting link errors.

I have no idea where to go from here. Please. HELP!