VN S1 anti theft module problem?

[VN S]

hey guys, A while back i bored out my 3.8lt and threw in a crow cam ect ect. When i fired it up the first time it ran fine until a few thing internally happened, so i had to take it out and fix a few minor issues. Once i put the engine in, my fuel pump will not prime but will run if it is bypassed and the injectors are not opening but have power. I have tried 3 engine harnesses and also fitted another body harness. Any ideas?

I was doing research and found that the anti theft module cause's this to happen but is there any way to by pass the anti theft module?

[Jxw]

check/replace your oil pressure sender, swapped relays around? not dirty/bad relay contact? fuel pump fuse isn't all corroded and making bad contact?

does your car have the key switch in the glove box for security?

[VN S]

yea, all wires are correct, new fuse box / relay panel in the engine bay. but there is no key switch in the glove box??

[Jxw]

what wiring loom have you put in? S1 or S2
Engine light coming on when you turn to ignition?

Here's a wiring diagram for 1990 but same area (top right of the schematic) to look if you're using earlier, check pin A6 on the ecu, is it +12V or 0ish