add beep to keyless

Howie take a look at his diagram again. I think it would work. As long as the ignition is off the relay will be deenergized which will allow the door lock pulses to pass through the NC contacts and sound the siren for ~0.8 seconds. Once the ignition is turned on the relay energizes and breaks the contacts, preventing the beeper from working when the ignition is on. The biggest problem there is that a ~0.8 second is generally a bit long for a confirmation beep. If you use a traditional alarm siren you most likely won't get a clean chirp as the siren will start in on its siren routine. I may be biased but I like the prepackaged solution!Kevin Pierson

That's why I recommended it via Tommy's post! Except I think Mr. I hit the nail on the head, no parts required!

Well went with my original plan using the relay and works great! I substituted a few different piezo buzzers until I found the tone and volume that sounded good.

thanks for all the help.