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Those two holes are for e30 325 car parts... (archive)

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Posted by michael on August 15, 2001 at 11:40:50:

In Reply to: Thermo switch that fits in the lower radiator....? posted by Erik Brannfors - Seattle on August 15, 2001 at 09:53:22:

I believe that the BMW sensors are of two wire type (could be wrong as I do not have a 325). A 1 wire closes a switch to ground, the sensor's case. A 2 wire will require grounding one of the wires, and running the other to your fan.


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