s500 w140 no crank

[vinnie999]

Hello all. My 1994 s500 will not crank over. The dash lights all light up, battery tests good with load tester, no voltage drain when key is in crank position. It's just like a bad nss (I have tried starting it in neutral). I also tried locking and unlocking the door with the key. There is no click at all when key is turned. My question is, how do I diagnose the alarm vs nss, and can the nss be bypassed for diagnistic purposes. The car has had the underhood harness replaced about 2k ago and has only 66k original miles. Any ideas on how to do this or anything eldse that could be causing this condition would be appreciated.