Chrysler Repair: fuse #19 blows:99 LH body, true thorn, amp fuse

Question
First off thanks for your time I hope you can help.  I have a 99 Chrysler 300m which has been a true thorn in my side.  My problem is with fuse 19 which seems to control more then what the side panel says.  I walked out to my car and noticed my keyless entry did not work thinking to myself the cars computer died again (GRRR).  Well I keyed myself in and was able to start the car without a problem.  When I did this the fan turned on high and it seemed to cycle all the exit ports (defrost, floor and face) and the horn honked for a half a second.  The interior lights, radio, dash clock and door locks did not appear to work among I am sure others.  After a little searching I realized fuse 19 was dead.  I replaced it and everything appeared to work again until a day later where the exact thing occurred again.  Now no matter what amp fuse I attempt to install both while off and running they blow.  By searching the internet I have not found an issue like mine.  I did find one article that said the ATC unit could be going bad.  I did a diagnostic test on the unit and it did not give any error codes.  I also noticed today that the windshield fluid pump does not work either at this time.  To top it off the fuse blew when I was not even driving or in the vehicle.

I truly hope you can help and again thanks for your time.
Wes

Answer
Hi Wes,
That fuse is designated the "ignition off draw" which implies that everything that the car provides when you have the key out of the ignition switch is powered through it. So let me give you a rundown on what the items are. You can contemplate upon any recent history of malbehavior on an individual basis in order to focus on which items might be the suspects:
glove box lamp, trunk lamp, power mirror switch, left and right power door lock switches, left and right front door lock key cylinders, left and right front door courtesy lamps, instrument cluster (memory), trunk release, sentry key immobilizer, radio (memory), theft system "set" lamp, auto temp control (memory) and several door actuators inside that.
There are many possiblities and the trick is to find which one is shorting to ground. Other than going to each one and disconnecting it and then reading what the resistance to ground is from the output side of the fuse #19 socket until is rises above a dead short, there is not much else to do unless you recall something in that list which was acting suspiciously.
Everything else that you observed when things broke down totally is consistent with the fuse blowing. All things being equal my suspicion would be the light bulbs having an internal short either in the bulb or the bulb/socket interface.
Let me know what comes to mind.
Roland