adding horn when the doors are locked?

Hello everyone.

A few years back i installed a Valet 561R remote start system on my wifes 2000 Ford Tauras.  One of the main things I looked over is the fact the this remote start system only has a single button on the remote for the lock/unlock function.

I want add a horn beep only when the doors locked.  Is this as simple as connecting a wire from the (-) lock trigger to the dark blue horn wire that runs up the strering column to the horn?  Is there even a need for a relay?

thanks!

its just that simple. no need for a relay. one problem though, as i remember, with the 561r the horn output also happens with the unlock too and there is not a programming option to turn it off. it will honk once with lock and 2 times with unlock.

just curious but.......why in the world would it honk when you push the switch if he uses the horn output on the 561R?

your right it doesnt. i forgot about that. he needs to use the GREEN / WHITE factory alarm rearm wire though. thats still better than the lock wire and wont need diodes.

Excellent! thanks everyone for your replys.  Great idea, I'm gonna use the GREEN / WHITE rearm wire.  That didnt even cross my mind.  One last question,  Since I'm going to connect the rearm wire to the (-) dark blue horn wire, is there a need for a relay?  I just want to make sure.

Thank again, I really appericate the help.

-ty1er/