There is another component that I think you may have overlooked. Its the inline Fan resistor.

My fans did not work and it turned out that the resistor contacts where corroded. Cleaning them and the two connection points holding the resistor in place put my fans back in business.

This resitor is typically located either, close to the fan motor, or on the driver's side fender behind the headlight.

Phil

__________________
'95 E300 Diesel, 264,000 Miles. [Sold it]