I have been wondering for quite some time if there was a way that the horn could honk after you hit the lock button two times? Has anybody ever been able to find a way? If so, how did you do it?

 

You could bridge it into the door lock wiring, it won’t do it on second lock it would do it everytime it locks. Pcm didn’t support this on those years so you’d either need an aftermarket alarm system or do as I said, but when you get over 5 mph and the door auto locks horn would sound then too