strobes hooked to alarm stay on?

So I want to hook up several strobes to my alarm, so once triggered they remain on. So far I've figured out that I need to convert my (+) horn output to (-) and then use a Momentary to Constant Output relay setup. My friend brought to light that if I do this, when my alarm chirps to lock/unlock the srobes will go off. Is there something I can use that will only activate the relays after say a 2 sec constant output.

Also are there any good timer's out there that I could use instead, for the strobes to go off for say an hour after the alarm stops.

TIA

Use your ground when armed to trigger a relay to turn on your lights. Thgis would be the same output you would use for starter kill.

Sounds simple?

So this will trigger when the alarm is activated, not chirped. My alarm is the black widow bwx5, it's the BLACK/ red wire if I'm understanding you correctly. Thanks