Oil Temp Sender Strangeness

[Alexander van Gerbig]

    I just got an oil temp gauge sender today from the dealership and I am
thoroughly confused as how to wire it up.  The oil pressure gauge sender has
two spades, simple.  The oil temp gauge sender has a strange circular top
and I can't think of any way to connect it to a wire.  Anyone know how this
works?

TIA!

Alexander van Gerbig -- '88 80

The Audi  80 Pages-----------------
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