Led wiring problem?

Hi, I want to put a led rod behind my grill. Does anybody can help me realizing my wishes: First of all, when i push the remote button to unlock/disarm my car, the upper right and left lamps goes on combined with a twice beep sound. Also the interiour light(dome light) goes on. But the dome light goes on a few milli seconds before the other lights with the beep sound. That means two different curcuits are involed. I would like to connect my led like this: When i unlock/disarm the car my led should blink twice like the lights, after that the led should continue light up as long as the dome does. The dome light goes off after 30 seconds and it should also turn off the led. So i have to find the correct cables to do that. Thanks in advance Fabian

i have a toyota taxoma 2004 XtraCab Sorry i forgot that to mention