I bought some VDO temp senders on ebay and only need 4 of them, so
the other 8 can be had pretty cheap.  $10 each inc. shippping.  Max
of 2 per customer so we can spread the booty out amicably.

First, a little history/background.  these temp senders have the
14mmx1.5 drainplug thread on them with aluminum washer.  They have a
large spade terminal and a smaller one on them.  the big one goes to
the gauge and the smaller one, interestingly enough, is a "cut in
"switch that closes around 120C.  That may be a little late for those
of you wanting a fan to kick in for an external oil cooler, but  the
temp sender still works regardless. I guess it could trigger a
warning light on the dash as well These are NOS from 1998 and are the
0-150C range.  Will work on 6-24 volt systems.  Although I haven't
checked, if you plan on using this for a drain plug application, make
sure you have the depth as these senders from the washer to the tip
of the sender probe are a little over 1.5" in length.  They would
defiintely work in a "Ken Lewis" set up where the sender is mounted
in a flat steel pate covering the oil filler hole(he gets his oil in
through an Empi breather tower over the old generator
stand  localtion).  Water temp senders could also be set up as
well.  They would likely work on a host of other metric vehicles you
may own as well.

P mail me if you want to get one or two.  I have 6 on hand and the
other two coming shortly.

Bullwinkle