Chrysler Repair: 1991 Chrysler New Yorker, chrysler new yorker, tail lamps

Question
Hi, I went out to start the car to disarm the alarm.  And now it will not turn over.  I did have it running with the alarms lights going off but no horn.  I have tried to lock and unlock the door and no luck.  The alarm lights are still going off.  Is there a reset for this car? I had to disconnect the cables to the battery because I had to put a new headlight switch in.  It was working fine before this.  I have had problems with the alarm in the past like I wrote to you on 2-17-06(I have not disarmed the alarm yet).  I was happy that you could tell me how to disarm the alarm.  Now, I hope you can help me.  Is there a reset for this car?  What other things can I do to get it out of this mode?  Like I said no horn is going off this time just the alarm lights.  Thank you so much, Crysta

Answer
Hi Crysta,
If by 'not turn over' you mean that the starter motor will not rotate the engine then that has nothing to do with the anti-theft system but rather the battery or the circuit that operates the starter motor. So tell me if that is not the case.
When you disconnected the battery you caused the system to alarm and the only reset procedure is lock/unlock either front door with the key or the remote key if you have that feature. If the engine will crank, but not start, then that alarmed situation needs to be reset. If the starter will not turn the engine over then you will want to get the battery recharged.
As far at the inability to disarm the system you might try this:
There is a self diagnostic test that you might try to isolate the problem within; it verifies operation of all monitored switches or circuits. To enter diagnostics, cycle the ignition key to the accessory position and back to off 3 times, leaving the key in the accessory position on the third cycle.
Upon entering diagnositics, the park and tail lamps will begin flashing to verify their operation. In addition, the horn will sound twice to indicate that the trunk key cylinder is in its proper position. Returning the ignition to the OFF position will stop the lamps from flashing while keeping the system in diagnostics.
While in diagnostics mode, a horn pulse should occur at each of the following events indicating proper operation:
(1) Beginning with all doors closed, open then close each door. The horn will sound when the door ajar switch closes (which happens when the door itself is opened), and then again when the switch opens (when you close the door).. There must be a 1 second delay between closing and opening the switch.
(2) Open, then close the hood. The horn will sound when the hood is opened, and again when it is closed.
(3) Activate the power door locks in both the lock and unlock directions. The horn will sound after each activation.
(4) Rotate the key in each of the door lock cylinders to the unlock position. The horn will sound as the switch closes, and again when it opens. There must be a 1 second delay bwtween changing switch states, or the horn will not sound.
(5) Cycle the key to the ignition RUN position. A single horn pulse will indicate proper operation of the ignition input. This will also take the module out of diagnostics mode. For any of these tests, if the switch does not remain open or closed for at least 1 second, the horn will only sound once.
The lack of a horn pulse, during any operation, indicates a switch failure, the lack of that input in the Vehicle Theft Security system module, or a failure internal to the module. Check for continuity at the switch, if this is good, check for an open or shorted wire between the switch and the alarm module.
This may help to correct the system rather than disabling it. But in any case we have to get the engine to crank and start so you can disconnect it; or disarm it and try the diagnosis and repair of it.
I will await your report of the results of the diagnostic test/battery charge.
Roland