OK, next question:

On the right top side of my radiator, facing back towards the engine, there is what appears to me to be a thermal switch. You can see it here:

http://picasaweb.google.com/Lanval.de.logres/RadiatorSwitchAndFan

I assumed initially that it was attached to the forward fan - but it's not. You can just see the wiring for the fan taking off into the car in the lower right-hand corner of the picture.

I never use the A/C (and it doesn't work after I had it fixed last year) so I don't really know if the fan works. I'll test it in the near future, but here's where this is all going:

I'm going to do the E-fan conversion - I've read numerous threads here on the pros/cons, so let's just say I'm going forward with it anyway. I have the nice relay from the donor car which runs the fan on high or low; my question is this:

Is the switch in the radiator a thermal switch that could be used for that? Is there any way to tell? I looked all around on the switch (except the underside, which is a bit difficult to get to until I buy one of those cool little mirrors) and couldn't find any markings...

So now I defer to the collective wisdom of the BB - I thank you in advance for your assistance.

Best,

Lanval