Car Alarms: Auto Alarm, computer wire, alarm functions

Question
I have a 93 Inf G20 that randomly goes off.  It is just the horn alarm.  The lights do not go off. The only way I could stop it was by unplugging the battery overnight or leaving it unlocked. The alternator was recently replaced, if makes an difference. I noted a simular question in which you suggested:
The FACTORY ALARM DISARM WIRE IS GREEN/YELLOW (-) at the Anti Theft Module Located In Passenger Kick Panel Behind ABS Computer. Wire is also Found In Driver's Kick Panel.

Once Located, splice into this wire with a simular guage wire, and put it to a solid chassis ground. This terminates
the alarm functions entirely.

Is the same for my situation.

Answer
Yes that will eliminate the alarm.
But from the description, you may have computer
problems. Is there anyway you can get it in to Infinity
to put it on the code reader there, and try to reset
the codes to restore it to normal?

I'd like to see you keep the integrity of the system if
possible. If I'm right, it may fix the troubles.

Let me know what you discover.

ALARMTEK