Where is temp sender?('87 5000CST)

[BrettD516@aol.com]

I have an 87 500CS Turbo.
My temperature gauge is not working-if it works, it usually only does so for
a few minutes.  I think the problem is a loose(or corroded) contact at the
sender.  However, after looking it up in the shop manual, I couldn't find the
temp sensor.  Figures 14,17+19 on pg. 90.11 show some area on the engine that
I am convinced does not exist.  It would be helpfull if someone could
describe more clearly where the sender is, and the color codes of the two
wires.  The manual does a very poor job-and it makes references to several
different sensors, but doesn't distiguish between them.

Thanks
Brett