Engine will not crank

I have replaced the starter relay previous to asking my question. I have the correct power and ground at all points but the engine still will not crank unless I jump from 87 to 30 and it still will not run with key in run position. Now I am thinking PCM may not be letting signal through. Cannot ever remember seeing security light on, flashing or otherwise.

Decided to let an ignition and wiring guy handle it. I will let you know what happens to maybe benefit someone else. This guy has been in this field for about thirty years. I just did not want to give up but my brain is about fried on this one. Thanks for your help.

Ken, I finally got the electrical problem solved! I was going to take it to a friend who does this sort of thing but my stubbornness got me. I figured it was the pcm or the nss but after hrs of process of elimination by. Checking power and ground wiring, I hit it. The engine to body ground was deteriorated so bad it wasn't functional. Grounded the engine and everything is back to normal. Lesson learned! Never overlook the simple things. Thanks for your input. Hope this may help others with this or a similar problem. Ed