I just noticed this after I soldered this one all togther...the only thing I noticed this:
Testing my fan header on my motherboard I get pins.
Black - Ground
Red - Power measured 12.41V
Yellow -Tach/Sensor measured 10.48V
I didn't realize the sensor wire would have power?
I also just wired a 100 + 100 + 150 resistor in series to get 350, but a single 360 would have been easier.
I also assumed the grey wire with lettering on the SF800 is the ground...I hope that's right?
Have you hook yours up and blown through it to see if it reads?