horn pulse relay setup

ok, since the security forum section gets soooo many posts daily, I figured why not ask here since this is a relay question DUH! haha.

I am looking to add a horn sound with the pulse of the park lights to the factory keyless entry. Thus why I am looking for the wire codes. Can someone please review this relay diagram to make sure this would work, and make it so the horn honks with the pulse while the vehicle is off and gets armed/disarmed, but deactivates with the car on.

Thanks, ohh and suggestions if this is not the correct way to do this would be a plus!!!

Here is the diagram I think would satisfy my needs . . .

RELAY #1

85 - acc. wire from car
86 - chassis
30 - fused constant 12v+
87a - output to 85 pin of relay 2

RELAY #2

85 - from pin 87a of relay 1
86 - park light (-) input (activation when park light comes on)
30 - chassis (if horn is negatively switched)
87 - to (-) activation side of horn (IF HORN IS NEGATIVELY SWITCHED)

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Eclipse 8445, Kicker DS60's, Hifonics TXi4400, Eclipse SW6143DVC, and Power Acoustik LT980-2.

The relay set up you have there will send ground (-) current to the horn wire when the car is off, if the parking lights turn on. If I read your post right, this is what you are looking for.

thank you!

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Eclipse 8445, Kicker DS60's, Hifonics TXi4400, Eclipse SW6143DVC, and Power Acoustik LT980-2.