99T steering wheel in a c900 - part needed?

Hi those who noticed my threads on a few forum sites about using a Saab 99T
steering wheel in a C900 may already know about this, but I've acquired a
99T steering wheel (the type with a triangle-shaped centre cover piece), and
from feedback so far it seems the steering wheel is missing the part which
provides the spring-loaded horn contact like a c900 steering wheel has.

Two pics for comparison - first the back of the 99T steering wheel:

http://www.classicsaab.net/gallery2/main.php?g2_itemId=11420

secondly the back of an early c900 turbo steering wheel:

http://www.classicsaab.net/gallery2/main.php?g2_itemId=11423

Does anyone know what the Saab part number is for the missing piece on the
99T steering wheel, and whether the same part from the back of one of those
c900 steering wheels can be 'salvaged' to use with the 99T steering wheel? I
don't have a parts book or EPC which covers 99's, so if someone is able to
help I'd appreciate some advice.

Thanks,

Craig.

--
Craig's Saab 99 Appreciation Society! Classic Saab 99's and C900's -
They might be battle-scarred and weary but they keep on going and proving
that Saab was light-years ahead of the rest of the pack for building safe,
reliable cars. http://lios.apana.org.au/~9t9 - 9t9.DeleteThis@lios.apana.org.au