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Nice looking switch Wil.
Por_Sha911: approach the problem in this fashion:
1) Make sure the fan actually works. First supply power and ground to it via means of jumper wires if necessary and make sure the motor still turns. If not, buy a new fan. If yes, then move on to the wiring.
2) The wiring is actually composed of two circuits. The fan has its own power and ground connections, and there is a relay which must be actuated to complete the main fan circuit. I don't have my Bentley anymore (because, sadly, I don't have my 911 any more), but my recollection is that the fan always has power, and the ground is completed by the relay, which is grounded by the t'stat in the cooler. If there are no physical breaks or corroded connectors in these circuits, then the difficulty is either in the relay or the thermostat, so you can continue to troubleshoot by either bypassing these components, or checking them for function.
HTH,
ianc
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BMW 135i. Nice. Fast. But no 911...
"I will tell you there is a big difference between driving money and driving blood, sweat and tears." - PorscheGuy79
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