because of condensation
on mine it is under the bed in front of the water tank and can be accessed from the door inside the trailer in the front of bed. It is just to the right inside that compartment
That is not very likely . Much more possible is a leak in the heater core.
COULD BE PLUGED DRAIN
heater core.
The 2004 has quite a history with that problem. The cowl under the wiper blade is probably warped allowing water in. That water also poses problems for the blower motor which is located right behind the glove compartment.
in the glove box or under the seat
It will be located under or behind the glove compartment. The rubber tube goes thru the firewall. Here is where they get clogged and leak water into the passenger side floor. Can be blown out with shop air from underneath or pull it in and dig out the clog.
Only if the water restrictor is worn out in the heater core fittings. It is made to slow the water up so it don't make that noise.
I believe that the airconditioner condensation drain is plugged. How do I clear it?
they live by breathing under water
Your AC drain line is clogged
No, it can help break in the glove. Just don't soak the glove.