Blower Motor not working 2000 Grand Marquis

The motor works when directly attached to power. Voltage across wire into blower is 0. Voltage from hot wire to ground is 14 volts. Voltage on second wire is zero and is not grounded.

I've gathered this may be a problem with the blower controller resistor. Where exactly is this located? I've read one post that says this is in the engine compartment, another says under the dash, and still another inside the plenum.

Thanks.