[s-cars] S6 no starter

[DGraber460 at aol.com]

Tonight the S-car forced me to push start it to get it home.
A few months ago it started not powering the starter just like a bad  
ignition switch on occasion. I checked the switch (renewed less than a year ago)  and 
it was not cracked and appeared new.
When it acts up, a relay under the dash (#4 from the left labeled  "204") 
hums. With the switch removed from the lock, and activated by a  screwdriver it 
still acts up and the relay hums. The relayed tracks are #87  & 30. If I jumper 
those two tracks with a fused wire it powers the starter 2  out 3 attempts. 
Two different replacement relays make no difference.
I have no Bentley or wiring diagrams, and as poor a "sparky" as I am it  
might not help.
What's up?
TIA  
 
Dennis
Denver