No injector Pulse?

This vehicle sat in someone's yard for about ten years. I was homeless and bought the car for $500.00. Initially the security feature wouldn't disengage. I got that figured out now. The security light does go off when I turn the key on. I had to clean out the fuel tank by hand because it was bad from sitting. I hand wiped out the tank and replaced the fuel sending unit and pump as well as changed the fuel filter and oil filter and did an oil change. The car wouldn't start. I replaced the camshaft sensor, crankshaft sensor and replaced the crankshaft seal because it was bad. I also replaced the oil pressure switch because initially when I was trying to start the car it blew oil all over the belts. Now the cranking sounds much better after cleaning all that up. I tried starting fluid and the car does start. When I test for injector pulse, I can't find any. There is power to the injectors with the key on but no injector pulse during cranking. My next step will be to troubleshoot the wiring, I guess. I want to see if I have a pulse signal from the ECM but this car has tons of wiring and so it's been overwhelming for me. I don't have any diagrams for the wiring and I'm not sure exactly what is what as far as ECM, PCM, etc. All fuses have voltage etc. I have fuel at the rail, I haven't put a pressure gauge on it, but it squirts out when I depress the check valve on the rail. I cleaned the mass air flow sensor. I unhooked the exhaust briefly to make sure it wasn't getting back pressure and it's currently unhooked. I plan to just reconnect it at this point just haven't done it yet. I've been checking wiring and nothing appears bad but nice had bedded down in this car while it sat. I've put a lot of work into this thing and don't want to give up. I'm learning a lot. I think it's a wiring issue or maybe the ECM, I'm not sure. Please help with any information, suggestions, wiring diagrams, etc. Thank you so much.