relay p/n's

[geo <gamills@ns.sympatico.ca>]

I wonder if one of you kind souls, with some time on your
hands, could tell me what these relays are for.  etka is not
too liberal with descriptions (at least on the ~80% screen
display I have).  I got these from the aux panel of a VERY
picked over 87 5k fwd sitting in a creek at a local
junkyard.  All the good stuff I was hoping to get was gonzo.

The candidates are:
443 955 532 (timed relay - after run fan?)
431 951 253B
171 959 143A

There were also some VDO parts still left.  Should I strip
them out toute suite?

Thank you ladies and gentleman for any input.  Going to put
some fresh trout from the lake on the BBQ :)

Geo