1999 Nissan Quest, How To Disable Factory Alarm

I got a nissan quest 1999 and i need to disable the factory alarm, i grounded the RED / blk wire located at the kik panel but still the parking ligths are blinking and the horn sounding. at the first instant after grounding the wire{RED / blk} i lock the door with the driver window down and after 30 seconds open the door from inside, the alarm didnt work but tonight again the alarm started beeping and the ligths were flashing .Can some one tell me what to do please thank you.

That won't work....it's a normally closed switch. Unplugging it is the equivalent of never opening the hood and allow the alarm to arm. This is contrary to what we want.

You can however go to the switch and short the wire to ground but that's a dirtier job.