Hi, I have a 85 4X4 22rec EFI, project rig that I just put a brand new long block in. It's been quite a project to say the least. So I am to the point of initial start up and it has no spark. Coil is getting 12v and ohm checked within spec. .010 gap in ignition mag in distributor. there is no pulse on the neg side of coil. I am not sure if it could be a wiring harness issue, a ignition module problem, or possibly a ECU issue? How do I accurately diagnose which it could be. I have already spent over 3g on the motor swap so you can imagine why I dont want to spend any more fun tickets I dont have to.