Headlight warning chime

Looks like a couple of different ways to do it.

With the F-Body headlight switch, could you not also use a relay with the trigger circuit going to ground through the extra contact to power a buzzer?

Only thing I don't see an easy way to do on my setup is to trigger the chime only when the door is open rather than any time the headlights are on and the key off. There is a circuit available, but it would turn the chime on if you turn on the dome light and headlights at the same time using the headlight switch.

Something else I would add is that the way I am doing this keeps the key-in functionality, but also adds the ability to disable the chime when the car is running and the door is open. Yes the headlight warning is the number one reason to do this, but I like that I can keep the key-in warning but without having to listen to the chime/buzzer if I get out of the car to get the mail or something out of the trunk.

Honestly, not sure I would suggest doing it the way I am on a car that doesn't have the seatbelt interlock. So far it looks like I have all the wires I need already in the right area, minus a short wire from the headlight switch to a ground.