dome light, on, for 30 from unlock

just wondering if someone had a diagram for a relay setup to turn on my interior light for 30 from the 1 second pulse from the Central Door Locks. i also want my interior light to work normally aswel, so if i were to open my door then the light would then stay on till i shout my door.

i have read the diagrams else where on the site but looks as though they wouldn't work from a CDL pulse then stay on.

the reason i want this is my alarm is hooked up to my door and when opened (while armed) will set the alarm off. so if some one was to unlock my car it would turn the interior light on and triping the alarm before they actually have my car door open.

my alarm doesn't have a dome light trigger otherwise it would have made it so much easier.

cheers tails.