97 Montero alarm issue
 

How's it goin, I'm trying to help a friend out with her 97 Montero. An old boyfriend of her's disconnected a wire somewhere that has to do with the horn sounding when you lock the doors with the keyless entry. The horn still works, just doesnt sound when the alarm is activated. I have done some searching on the net but didnt come up with anything usefull. I have also searched under the hood and found nothing. I know nothing about foriegn cars. Any input would be greatly appreciated.