No Crank

90' 300e The problem is ; the starter won't turn over. I have recently changed the serp belt, oil pan seal and exhaust manifold gaskets. when I was done the "Black Beauty" would not start. I proceeded to change the starter however, same result it would not turn over.
I have checked the voltage to the main terminal and it is there, however I do not have voltage at the primary when I crank her up. All the fuses are good in the fuse box under the hood. Now Im thinking its a relay......... I would appreciate any advise.

[Edited by Dave300e on 12-22-2000 at 12:52 PM]