For some reason last week my 99 started doing this weird thing where after I press the lock button and arm the stock alarm, it does its usual beep letting me know that its locked and then about 5 seconds later the horn beeps and lights flash twice. I cant seem to find anything in the manual about this anywhere. I already checked to make sure all doors are locking and are all closed. So Im really confused as to why its doing this.... Any help would be greatly appreciated.

 

I rememeber this, but I cant remeber the cause. Its still early maybe it will come to me.