2004 Endeavor Blower Motor Resistor Location
If it is for the 2004, when you remove the glove box, look at the duct running across the dash to the left
(looking through the area where you removed the glovebox.)
About mid dash, you will see a connector to what looks like something flush mounted into the duct.
That is the resistor, inserted into the duct.
Their are one? or two screws holding it in place. They can be a pain to get to (at least for me...) but that is your resistor.
Hope this helps.