There appears to be much confusion about how the evaporator drains the water that it condenses out of the air in a crown victoria.

Here's the empty evaporator case from a 1998 crown victoria. The silver colored thermal insulation on the outside of the case has been removed, as have the blower resistor, blower fan, evaporator and various other components.

Here's the half of the evaporator housing that has the drain on it.

The red arrow points to the drain on the underhood portion of the evaporator housing

Here's the drain from a few different angles

Here's the blower motor half of the evaporator housing

And the blower half from the back side

Normally, this peice would be placed over the back of the blower half of the evaporator housing to control airflow

With the blower motor out, you can reach inside the housing and clean off any debris that may have lodged on the evaporator

Here's the blower motor itself

Here's the electrical connector

This hole would normally have a hose in it would have a continuous flow of air whenever the blower motor was spinning. This cools the components inside the blower motor.

Looking inside the hole, the motor commutator and brushes are visible. If you purchase a used police cruiser, you might want to take a look inside this spot to determine how much life the brushes have left in your car.