Car Alarms: ALARM GONE MAD, nissan altima, brain box

Question
I bought my son a 1996 Nissan Altima a year ago. It has an aftermarket alarm, unknown manufacturer.  We have not been using the alarm  cause sometimes it would not turn off.  Anyway, it armed itself and won't turn off, ignition inoperative.  I have turned the key to accessory, pushed and held the reset button, then turned key off, no luck.  LED light keeps flashing. Tried to turn key off/on twice then hold button, no luck.  Unplugged brain box which silenced alarm but ignition still disabled. How can get this thing shut down in order to start the car.  PLEASE HELP  

Answer
What a pain in the tush!
Ok let's locate the 2 starter wires in this car
BLACK/WHITE &  BLACK YELLOW(COLD START WIRE).
It appears that the installer put relays on these
wires for starter kill. What I want you to do
is to cut these relays out of line, and re attatch the
2 starter wires to pre install condition.

This should then restore
the use of the starter. And since this car
does not have a factory alarm, then this is the most
likely scenario.

Let me know what happens.
Good luck with it.

ALARMTEK
STARTERDISABLE.com